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Last edited by ImportBot
September 23, 2008 | History

Jacques R Helfer

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  • Cover of: How to know the grasshoppers, cockroaches and their allies

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  • Cover of: How to know the grasshopper, cockroaches and their allies: pictured-keys for identifying many of the grasshoppers, crickets, katydids, earwigs, termites, cockroaches, praying mantids, rock-crawlers, and walkingsticks occuring in North America, north of Mexico.  All illus. drawn by Jacques R. Helfer.

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September 23, 2008 Created by ImportBot Imported from Miami University of Ohio MARC record.