TY - BOOK AU - Reddy,K.Udaya Bhaskara TI - Relative toxicity and persistence studies of a microbial insecticide (NPV) and certain other chemical insectides against Tobacco caterpillar,Spodoptera litura ; Fabricius (Lepidoptera : Noctuidae) KW - Tobacco KW - Insecticides KW - Microbial pesticides KW - Toxicity ER -