e books
1. Soil Microbiology, Ecology and Biochemistry. 3rd Ed – Paul , E .
2. Color Atlas of diagnostic Microbiology-LuisM.de la Maza, Marie T. Pezzlo and Ellen Jo Baron
3. A photographic Atlas for the Microbiology Laboratory 4th edition,-Michael J. Leboffee and Burton E.Pierce
4. Soil Microbiology -Waksman, S. A
5. Microbiology -Lansing M.Prescott
6. Principles of fermentation technology -P.F.Stanbury,A.Whitaker and S.J.Hall