A history of grasshopper abundance surveys and forecast of outbreaks in Saskatchewan
Paul W. Riegert
Bok Engelsk 1968
Utgitt | Ottawa : Entomological Society of Canada , 1968
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Omfang | 99 s. : ill.
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Utgitt | Ottawa : Entomological Society of Canada , 1968
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Omfang | 99 s. : ill.
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