A 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.) - Craig, James Galahad Othman. (My University, 1956)
Call number: LD2668 .T4 1956 C73
Keywords: Malathion.; Cockroaches--Resistance to insecticides.; Masters theses