1. Introduction to Soil Microbiology;Alexander,1977
2. Evaluation of incoming and outgoing processes that affect soil nitrogen;Allison,1965
3. Studies on soil denitrifying bacteria;Amin,1973
4. Methods of Soil Analysis. Part 2, Chemical and microbiological properties,1965
5. Influence of soil profile characteristics and nutrient ocncentrations on fungi and bacteria in Leon fire sand;Blue;Soil Sci.,1955