Biochemistry and Physiology of Microorganisms, (New March 2000) 2 Microbial activities Soil Biology 2 Soil enzymes 2 Soil fertility 2 Soils 2 Techniques and Methodology 2 Analytical methods 1 Aquatic Biology and Ecology 1 Aquatic environment 1 Biological activity in soil 1 Chemical speciation 1 Chromatography 1 Ecosystems 1 Enzyme activity 1 Genetics and Molecular Biology of Microorganisms, (New March 2000) 1 Hydrolysis 1 Mass spectrometry 1 Mathematics and Statistics 1 Microbial Ecology, (New March 2000) 1 Microbial ecology 1 Microbiological techniques 1 Models 1 Mycorrhizal fungi 1 Mycorrhizas 1 Nodulation 1 Nuclear magnetic resonance spectroscopy 1 Nutrient deficiencies 1 Nutrient uptake 1 Organophosphorus compounds 1