TY  - BOOK
AU  - Ridgway, R. L.,
TI  - Biological Control by Augmentation of Natural Enemies
SN  - 0306363119
U1  - 632 
PY  - 1977///
CY  - New York
PB  - Plenum Press
KW  - Natural Enemies
KW  - Plant injuries, diseases & pests
ER  -