TY  - BOOK
AU  - Van den Bosch, Robert
AU  - Messenger, P. S.
TI  - Biological control
SN  - 0700202307
U1  - 632.96 
PY  - 1973///
CY  - London
PB  - Intertext Books
KW  - Biological control
KW  - Insect pests
ER  -