TY  - BOOK
AU  - Welch ,S.M
AU  - Croft ,B.A
TI  - The design of biological monitoring systems for pest management
SN  - 9022006875
PY  - 1979///
CY  - Wageningen
PB  - Center for Agricultural Pub. and Documentation
KW  - Pests
KW  - Biological control
KW  - Mathematical models
KW  - Control
N1  - References : p.72-76
ER  -