Rahman, A.S. and Akter, M. 2007. Toxicity of diazinon and cypermethrin against the American cockroach, <i>Periplaneta americana</i> (L.). University Journal of Zoology, Rajshahi University. 25, (Aug. 2007), 63–64. DOI:https://doi.org/10.3329/ujzru.v25i0.329.