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The Natural Classification of the Families of Coleoptera
By R. A. Crowson
Hampton (Middx.), E.W. Classey Ltd. , 1967
Cite: 2401021 with citation markup [cite:2401021]
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This is an interesting complement to Arnett (1)(2). It is very detailed (214 pages) and includes many drawings helpful for learning the names and numbers of body parts. One thing I find particularly interesting is its use of wing venation, which is little used in most Coleoptera keys.