1. A comparison of soil quality indexing methods for vegetable production systems in northern California;Andrews;Agriculture, Ecosystems and Environment,2002
2. Identifying critical limits for soil quality indicators in agro-ecosystems;Arshad;Agriculture, Ecosystems and Environment,2002
3. Field management effects on soil enzyme activities;Bandick;Soil Biology and Biochemistry,1999
4. Effects of extended monoculture and crop rotation system on microbial activities in soils;Beck;Landurirtachatliche Forschung,1974
5. Methods and application of soil microbiological analysis at the Landesanstalt für Bodenkultur und Pflanzenbau (LBB) in Munich for the determination of some aspects of soil fertility;Beck,1984