Biological and chemical determination of available phosphorus in soil.
D001230:Aspergillus / Q000378:metabolism; D002119:Calcium Carbonate / Q000032:analysis; D004534:Egypt; D006863:Hydrogen-Ion Concentration; D008722:Methods; D010758:Phosphorus / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
D012987:Soil; D010758:Phosphorus; D002119:Calcium Carbonate