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Upadhyay, R.K. and Baksh, H and Patra, D D and Tewari, S K and Sharma, S K and Katiyar, R S (2012) Integrated weed management of medicinal plants in India. International Journal of Medicinal and Aromatic Plants , 1 (2). pp. 51-56. ISSN 2249–4340
Upadhyay, R.K. and Patra, D.D. and Tewari, S.K. (2011) Natural nitrification inhibitors for higher nitrogen use efficiency, crop yield, and for curtailing global warming. Journal of Tropical Agriculture, 49 (1-2). pp. 19-24. ISSN 0971-636X