Western Australia, Insect identification, insecticides, Cockroaches, Periplaneta americana L., (Blatella germanica (L)
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Several species of cockroaches are now general household pests. In this country some of the native varieties have become semi-domesticated and, in addition, two or three introduced forms are quite common.
Jenkins, C. F. H.
"Insect pests and their control - Cockroaches and their control,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 5:
4, Article 12.
Available at: https://library.dpird.wa.gov.au/journal_agriculture3/vol5/iss4/12