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David Robert Ragge

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Stand Alone

songs of the western European grasshoppers of the genus Stenobothrus in relation to their taxonomy (Orthoptera : Acrididae).
songs of the western European bush-crickets of the genus Platycleis in relation to their taxonomy (Orthoptera: Tettigoniidae)
The Songs of the Western European Bush-crickets of the Genus Platycleis in Relation to Their Taxonomy (Orthoptera: Tettigoniidae)
The Songs of the Western European Grasshoppers of Genus Omocestus in Relation to Their Taxonomy (Orthoptera, Acrididae)