World crop protection
Stapley, J.H., Gayner, F.C.H.
World crop protection by J.H. Stapley and F.C.H. Gayner - London Iliffe Books Limited 1969 - 270 p.
Crop Protection
Pests and Diseases
632 / S 794 W
World crop protection by J.H. Stapley and F.C.H. Gayner - London Iliffe Books Limited 1969 - 270 p.
Crop Protection
Pests and Diseases
632 / S 794 W