TY  - BOOK
AU  - F.H. Perring
AU  -  K. Mellanby, 
TI  - Ecological effects of pesticides
SN  - 0-12-551350-X
U1  - 632.9506 
PY  - 1977///
CY  - London
PB  - Academic Press
N1  - F.H. Perring & K. Mellanby: Ecological effects of pesticides.  London.  Academic Press, 1977. 0-12-551350-X--(632.9506PER)
ER  -