Singh , J. S.
Crop protection in the tropics [Text] Singh, J. P. - New Delhi Vikas 1983 - vii, 378 p. ill. 22 cm.
Agriculture
632 / SIN
Crop protection in the tropics [Text] Singh, J. P. - New Delhi Vikas 1983 - vii, 378 p. ill. 22 cm.
Agriculture
632 / SIN