TY  - BOOK
AU  - Beltsville Symposia in Agricultural Research (5: 1980: Maryland)
AU  - Papavizas, George C
ED  - The Bare Symposium committes
TI  - Biological control in crop production
U1  - PA 632.96 B4 1980 
CY  - London
PB  -  Granada
KW  - Control biológico de plagas  Control biológicio de malas hierbas  Control biológico de insectos
ER  -