Title: Comparative study of the toxicity of malathion and malathion plus piperonyl butoxide by topical application on the German cockroach, Blattella germanica (L.), and the Madera cockroach, Leucopheae maderae (F.)
Description: This volume was digitized and made accessible online due to deterioration of the original print copy.
Subjects: Malathion, Cockroaches--Resistance to insecticides.