TY  - BOOK
AU  - Papavizas G C Ed.
ED  - Beltsville Symposia in Agricultural Research(5th : 1980 : Beltsville)
ED  - 
TI  - Biological control in crop production: proceedings
U1  - 632.96 
PY  - 1981///
CY  - London
PB  - Granada
KW  - Biological control
KW  - Crop production
ER  -