Decomposition Soil Biology 2 Soil Chemistry and Mineralogy 2 Soil fauna 2 Soil organic matter 2 Agricultural soils 1 Agroforestry 1 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 1 Agroforestry systems 1 Animal Ecology 1 Biodegradation 1 Biological activity in soil 1 Biomass 1 Crops 1 Economic analysis 1 Erosion 1 Erosion: Soil and Water Conservation 1 Food webs 1 Forest soils 1 Forests and Forest Trees (Biology and Ecology) 1 Grasslands and Rangelands 1 Human element 1 Leaching 1 Mathematics 1 Matrices 1 Microbial Ecology, (New March 2000) 1 Microbial degradation 1 Mineralization 1 Multipurpose trees 1 Mycorrhizal fungi 1