Rupela, O. P. (1997). Extending nitrogen fixation research to farmers' fields.
Chicago Edition CitationRupela, O. Petced. Extending Nitrogen Fixation Research to Farmers' Fields. Andhra Pradesh, 1997.
MLA Edition CitationRupela, O. Petced. Extending Nitrogen Fixation Research to Farmers' Fields. 1997.
Warning: These citations may not always be 100% accurate.