TY  - BOOK
AU  - Debach, Paul
TI  - Biological Control by Natural enemies
U1  - 632.96 
PY  - 1974///
CY  - New York
PB  - Cambridge Press
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Biological copntrol
KW  - Natural enemies
ER  -