Preface |
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Editors |
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Contributors |
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1 Nature, Distribution, and Origin of Soil Materials in the Forensic Comparison of Soils |
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1.2 Nature of Soils Relevant to Forensic Soil Science and Human Decomposition Processes |
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1.3 Brief History of Forensic Soil Science |
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1.4 Soil Origin, Classification, and Distribution |
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1.5 Spatial Scale and Pedogenic Processes |
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1.6 Relationship between Soil Type and Scale: Regional and Global |
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1.7 Most Favored Techniques Used by Forensic Soil Scientists |
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1.7.1 Theory of Making Comparisons between Soil Samples |
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1.7.2 Approaches and Methods for Making Comparisons between Soil Samples |
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1.7.2.5 Segregations and Coarse Fragments |
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1.8 Petrographic and Other Advanced Techniques and Instruments |
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2 Cadaver Decomposition and Soil: Processes |
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DAVID O. CARTER AND MARK TIBBETT |
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2.2 Cadavers: Composition and Decomposition |
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2.3 The Formation of a Cadaver Decomposition Island |
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2.3.1 Fresh and Bloated Cadavers |
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2.3.3 Advanced Decay, Dry, and Remains |
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2.4 Factors Influencing Cadaver Decomposition |
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2.4.1 Aboveground Decomposition |
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2.4.1.4 Associated Materials |
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2.4.2 Belowground Decomposition |
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2.4.2.2 Moisture and Soil Texture |
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2.4.2.4 Associated Materials |
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2.4.2.5 Decomposer Adaptation |
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3 The Role of Soil Organisms in Terrestrial Decomposition |
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3.2 Decomposition and Turnover |
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3.3 Factors Affecting Decomposition |
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3.3.2 Environmental Factors |
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3.3.3 Presence and Activity of Organisms |
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3.4 Can Ecological Principles Be Applied to Forensic Investigations? |
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4 Soil Fungi Associated with Graves and Latrines: Toward a Forensic Mycology |
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NAOHIKO SAGARA, TAKASHI YAMANAKA, AND MARK TIBBETT |
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4.2.1 Experimental Grouping of Fungi |
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4.2.2 Fungal Succession and Mycorrhizal Relations |
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4.2.3 Environmental Conditions |
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4.2.3.1 Initial Conditions |
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4.2.3.2 Changes in the Soil |
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4.2.3.3 Responses of Other Organisms |
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4.3 Postputrefaction Fungi (PPF) and AF |
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4.3.1 Fungal Growth Following Cadaver Decomposition on the Ground |
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4.3.2 Fungal Growth Following Cadaver Decomposition Belowground |
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4.3.3 Fungal Growth Following Excreta Decomposition on the Ground |
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4.3.4 Fungal Growth Following Excreta Decomposition Belowground |
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4.3.5 Habitat-Cleaning Symbiosis |
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4.4 Physiology of the AF and PPF |
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4.4.2.1 Nitrogen Utilization |
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4.4.2.2 Hydrogen Ion Concentration |
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4.4.2.3 Enzymatic Activity |
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4.4.3 Formation of Reproductive Structures |
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4.4.4 Physiology and Succession |
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4.5 Possibilities for Forensic Application |
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4.5.1 Human Behavior or Activities May Be Evidenced by Fungal Growth |
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4.5.2 Initial Conditions and the Postdeposition Interval May Be Assessed |
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4.5.3 Simulation Experiments |
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5 The Role of Invertebrates in Terrestrial Decomposition: Forensic Applications |
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IAN R. DADOUR AND MICHELLE L. HARVEY |
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5.4 The Soil-Corpse Interface |
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5.4.1.2 Spiders (Araneae) |
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5.4.2.1 Springtails (Collembola) |
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5.4.2.2 Silverfish (Thysanura) |
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5.4.2.3 Cockroaches (Blattodea) |
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5.4.2.4 Ants (Hymenoptera) |
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5.4.2.5 Earwigs (Dermaptera) |
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5.4.2.7 Beetles (Coleoptera) |
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5.5 Deeper Down: Invertebrates on Buried Bodies |
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6 The Decomposition of Hair in the Buried Body Environment |
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6.2 The Structure, Growth, and Function of Hair |
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6.3 Weathering, Contaminants, and Color Change to Hair Fibers |
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6.4 Structural Alteration to the Hair Fiber |
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6.5 Keratinophilic Fungi—Their Geographic Distribution and Ecological Factors Influencing Keratinolytic Activity |
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6.6 The Mechanism of Microbial Degradation of Hair Keratin |
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6.7 Histological Alteration to the Hair Shaft |
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6.8 Hair in Association with a Buried Body |
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6.9 Summary and Appropriate Measures for Safeguarding Evidence |
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7 The Decomposition of Materials Associated with Buried Cadavers |
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7.2.1 Natural Protein Fibers: Wool and Silk |
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7.2.2 Natural Cellulose Fibers: Cotton |
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7.2.3 Regenerated Cellulose: Viscose and Viscose Rayon |
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7.2.4 Synthetic Fibers: Nylon, Polyesters, Acrylics, Elastane |
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7.3 Soil as a Burial Environment |
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7.3.1 Agents of Decomposition |
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7.3.2 Degradation of the Body and Its Effect on Associated Materials |
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7.4 Decomposition of Textiles and Leather |
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7.4.1 Assessment of Textile Deterioration |
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7.4.2 Degradation of Textiles and Clothing |
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7.4.3 Degradation of Natural Fibers |
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7.4.4 Degradation of Synthetic Fibers |
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7.4.5 Degradation of Leather |
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7.4.6.1 Case Study: Duvet Cover in Woods |
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7.4.6.2 Case Study: Woman Buried in Pantyhose |
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7.4.6.3 Case Study: Differential Decay of Clothing on a Skeletonized Body |
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7.5.3 Metal-Preserved Organics |
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7.5.4.1 Case Study: The Mummified Body of a Woman |
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7.6 Textile Degradation Experiments |
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7.6.1 Experiments in Forensic Taphonomy |
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7.6.2 Blue Denim Textiles and Metal Zippers, Rivets, and Fasteners |
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7.6.3 The Effect of Cadaveric Decomposition on Differential Degradation of Textile Materials: Bradford Pig Experiments |
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7.7 Summary and Conclusions |
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Appendices: Review of Clothing Based on Current U.K. Experience |
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Appendix A. Men's Clothes |
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Appendix B. Women's Clothes |
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Appendix C. Household Fabrics |
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8 Decomposition Chemistry in a Burial Environment |
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8.2 The Chemical Process of Decomposition |
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8.2.1 Decomposition Products of Protein |
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8.2.2 Decomposition Products of Carbohydrates |
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8.2.3 Decomposition Products of Lipids |
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8.3 Liquefaction and Skeletonization |
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8.4 Rate of Decomposition of Buried Bodies |
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9 Potential Determinants of Postmortem and Postburial Interval of Buried Remains |
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9.2 The Body as a PMI Determinant |
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9.2.1 Forensic Entomology |
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9.2.1.1 Forensic Entomology and Buried Remains |
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9.2.2 Forensic Anthropology |
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9.2.2.1 Morphological, Chemical, and Immunological Studies |
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9.2.2.2 Radioisotope Studies |
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9.2.3 Forensic Odontology |
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9.2.3.1 Postmortem Tooth Loss as an Indicator of PMI |
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9.3 The Burial Environment as a PBI Determinant |
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9.3.2 Forensic Palynology |
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10 Principles and Methodologies of Measuring Microbial Activity and Biomass in Soil |
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10.2 Measuring Microbial Biomass and Activity |
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10.2.1 Soil Collection and Preparation |
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10.2.2 Soil Dry Matter Content and Water-Holding Capacity |
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10.2.2.1 Soil Dry Matter Content |
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10.2.2.2 Water-Holding Capacity |
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10.2.3 Measuring the Soil Microbial Biomass |
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10.2.3.1 Direct Microscopic Counting |
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10.2.4 Measuring Microbial Biomass C by Fumigation Extraction |
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10.2.4.1 Reagents and Experimental Procedure |
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10.2.4.2 Analysis of Soil Extracts |
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10.2.4.3 Automated Analysis of Organic C |
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10.2.5 Measuring Microbial Biomass N by Fumigation Extraction |
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10.2.5.1 Reagents and Experimental Procedure |
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10.2.6 Measuring Microbial Biomass Ninhydrin-N by FE |
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10.2.6.1 Reagents and Experimental Procedure |
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10.2.7 Measuring Microbial Biomass P |
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10.2.7.1 Reagents for Extraction |
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10.2.7.3 Preparation of Murphy-Riley Colorimetric Reagent |
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10.2.7.4 Analytical Procedure |
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10.2.8 Measuring Microbial Adenosine 5'-triphosphate |
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10.2.8.1 Preparation of Stock ATP Solution |
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10.2.8.2 Preparation of ATP Extraction Reagents |
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10.2.8.4 Measurement of ATP (Firefly Assay) |
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10.2.9 Substrate Induced Respiration (SIR) |
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10.2.10 Soil CO2 Evolution and N Mineralization |
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10.2.11 Arginine Ammonification |
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11 Methods of Characterizing and Fingerprinting Soils for Forensic Application |
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LORNA A. DAWSON, COLIN D. CAMPBELL, STEPHEN HILLIER, AND MARK J. BREWER |
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11.2.1 Background and Historical Perspective |
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11.2.2 The Evidential Value of Soils |
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11.3.1 Sampling and Handling |
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11.3.2 Physical Characteristics of Soil |
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11.3.2.2 Particle Size Distribution Analysis |
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11.3.3.1 Elemental Analysis, Trace Metals, Pollutants |
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11.3.3.2 Infrared (IR) Fingerprinting Methods |
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11.3.3.3 Other Chemical Fingerprinting Methods |
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11.3.4 Biological Analyses |
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11.3.4.3 Soil Organic Matter (SOM.) |
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11.3.4.4 Botanical Fragments |
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11.3.4.5 Microbial Fingerprints |
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11.3.5 Combined Approaches |
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11.3.6 Polyphasic Approaches and Links to Databases |
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11.3.7 Statistical Considerations and Presentation of Evidence in Court |
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Index |
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