Organophosphorus compounds Analytical methods 1 Aquatic Biology and Ecology 1 Aquatic environment 1 Biochemistry and Physiology of Microorganisms, (New March 2000) 1 Biological activity in soil 1 Chemical bonds 1 Chemical speciation 1 Chromatography 1 Ecosystems 1 Hydrolysis 1 Mass spectrometry 1 Mathematics and Statistics 1 Microbial activities 1 Models 1 Nuclear magnetic resonance spectroscopy 1 Nutrient deficiencies 1 Nutrient uptake 1 Organoantimony compounds 1 Organoarsenic compounds 1 Organobismuth compounds 1 Organosilicon compounds 1 Organosulfur compounds 1 Phosphates 1 Phosphorus 1 Plant Nutrition 1 Plant nutrition 1 Soil Biology 1 Soil Chemistry and Mineralogy 1 Soil Fertility 1