1. Microbial and biochemical changes induced by rotation and tillage in a soil under barley production;Angers;Canadian Journal of Soil Science,1993
2. Ball, D., Albrecht, S., Brehaut, C., Rickman, R., Waldman, S., 1994. Columbia Basin Agricultural Research Annual Report, Special Report 933. Agricultural Experiment Station. Oregon State University in cooperation with Agricultural Research Service. USDA
3. Soil microbial biomass and selected soil enzyme activities: effect of fertilization and cropping practices;Bolton;Soil Biology & Biochemistry,1985
4. Soil microflora and biological activities in the rhizospheres and root regions of coconut-based multistoreyed cropping and coconut monocropping systems;Bopaiah;Soil Biology & Biochemistry,1991
5. Enzyme interactions with clays and clay-organic matter complexes;Boyd,1990