Insecticides
Wimalasena,Sukumal
Insecticides - Colombo Institiute of Chemistry 2002 - 84p - Monograph No:13 .
9559244175
Insecticides
668.65 WIM
Insecticides - Colombo Institiute of Chemistry 2002 - 84p - Monograph No:13 .
9559244175
Insecticides
668.65 WIM
