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Jacques R. Helfer

Author of How to Know the Grasshoppers, Crickets, Cockroaches and Their Allies

4 Works 52 Members

Works by Jacques R. Helfer

How to Know the Grasshoppers, Crickets, Cockroaches and Their Allies (1970) 43 copies

How to know the rocks and minerals (1970) 6 copies

Trees and tree-like shrubs of the Mendocino Coast 2 copies

99 birds of the Mendocino coast (1964) 1 copy

Tagged

(Yellow Tag) General Collection (2) arthropods (3) biology (4) birding (1) birds (1) California (1) cockroaches (4) crickets (3) entomology (7) field guide (5) grasshoppers (5) GUB (1) habits (2) identification (4) insects (7) Keyed (2) keys (2) line drawings (2) methods (2) minerals (1) natural history (2) nature (2) NF (2) non-fiction (2) Orthoptera (2) Orthroptera (2) pictured key (2) reference (3) shelf h17 (2) Wilderness Skills (2)

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Statistics

Works: 4
Members: 52
Popularity: #307,429
Rating: 4.0

ISBNs: 6

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