TY  - BOOK
AU  - Perring, F.H., ed.
TI  - Ecological effects of pesticides
T2  - Linnean Society Symposium Series; no.5
U1  - 631.95:632.95 L7 
PY  - 1977///
CY  - London
PB  - Academic Press
KW  -  F.H.Perring and K.Mellanby
KW  - Mellanby, K., joint ed.
KW  - Pesticides-Environmental aspects
ER  -