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Studies on Some Asymbiotic N2-Fixing Bacteria: A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Agricultural Science / by Ashraf Adhame Hassan Mohamed; Samir Hamad Salem, Abd El-Kader Hazem Yosseif, Magdy Ismail Mostafa.
- 630
- Mohamed, Ashraf Adhame Hassan.
- Ain Shams University, Faculty of Agricultural Science,
- 2001.
- Cairo :