TY  - BOOK
TI  - Insects: The yearbook of agriculture 1952
U1  - 590 
PY  - 1969///
CY  - New Delhi
PB  - Oxford and IBH publishing
KW  - Intruducing the insects
KW  - How to know an insects
KW  - Insects as helpers
KW  - Inescts as destroyers
KW  - The nature of insecticides
N1  - United States department of agriculture Washington,D.C
ER  -