Subba Rao, N. S. (1993). BIOFERTILIZERS IN AGRICULTURE AND FORESTRY (3rd rvd ed.). Oxford & IBH Publishing Co. Pvt. Ltd..
Chicago Style (17. basım) AtıfSubba Rao, N. S. BIOFERTILIZERS IN AGRICULTURE AND FORESTRY. 3rd rvd ed. New Delhi: Oxford & IBH Publishing Co. Pvt. Ltd., 1993.
MLA (9th ed.) AtıfSubba Rao, N. S. BIOFERTILIZERS IN AGRICULTURE AND FORESTRY. 3rd rvd ed. Oxford & IBH Publishing Co. Pvt. Ltd., 1993.
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