Plant protection
Mehta, P.R., Varma, B.K.
Plant protection by P.R. Mehta and B.K. Varma - India Ministry of Food and Agriculture, Community Development and Cooperation 1968 - 587 p.
Plant Protection
632 / M 488 P
Plant protection by P.R. Mehta and B.K. Varma - India Ministry of Food and Agriculture, Community Development and Cooperation 1968 - 587 p.
Plant Protection
632 / M 488 P