by John L. Nickel
No reviews yet. Be the first!
Report on agricultural entomology in Cam...
Research Management for Development: Ope...
The role of the university in the agricu...
Temperature and humidity relationships o...
Silent Spring
Federal-grant research at the state agri...
The Vixens
Insect-Plant Interactions
Guide to the study of insects
Addresses and speeches on various occasi...