Ecological effects of pesticides
PERRING, F. H
Ecological effects of pesticides - London 1977 - 193p - Lennean society symposium series, no.5 .
PESTICIDES
INSECTS ,INJURIES AND BENEFICIAL PEST CONTROL PESTICIDES
632.7 S99E
Ecological effects of pesticides - London 1977 - 193p - Lennean society symposium series, no.5 .
PESTICIDES
INSECTS ,INJURIES AND BENEFICIAL PEST CONTROL PESTICIDES
632.7 S99E