Junkovsky N.

Chemical machinery കെമിക്കല്‍ മെഷീനറി - Thiruvananthapuram Kerala Bhasha Institute 1975 - vii, 1 - 312


Applied PhysicsMachine EngineeringINSECTS IN GENERAL , PREVENTIVE AND REMEDIAL MEASURES, INSECTS INJURIOUS TO CROPS, OTHER IMPORTANT INSECTS

621.8 / JUN-C