Insects The yearbook of agriculture 1952
- New Delhi Oxford and IBH publishing 1969
- 780p.
United States department of agriculture Washington,D.C
English
Intruducing the insects
How to know an insects
Insects as helpers
Inescts as destroyers
The nature of insecticides
590 / OXF/IN
United States department of agriculture Washington,D.C
English
Intruducing the insects
How to know an insects
Insects as helpers
Inescts as destroyers
The nature of insecticides
590 / OXF/IN