Biological activity in soil Soil Biology 2 Soil Chemistry and Mineralogy 2 Soil flora 2 Soil organic matter 2 Analytical methods 1 Animal Ecology 1 Aquatic Biology and Ecology 1 Aquatic environment 1 Biochemistry and Physiology of Microorganisms, (New March 2000) 1 Biodegradation 1 Chemical speciation 1 Chromatography 1 Decomposition 1 Ecosystems 1 Food webs 1 Hydrolysis 1 Mass spectrometry 1 Mathematics and Statistics 1 Microbial Ecology, (New March 2000) 1 Microbial activities 1 Microbial degradation 1 Mineralization 1 Models 1 Nuclear magnetic resonance spectroscopy 1 Nutrient deficiencies 1 Nutrient uptake 1 Organophosphorus compounds 1 Phosphorus 1 Plant Nutrition 1