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Found 436 works matching this query
Studies on four grass-inhabiting species of Schizaphis (Hem. Aphidoidea) with special reference to sex habits of S. arrhenatheri Pettersson
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Economic evaluation of selected cultural methods for suppressing the green peach aphid as a vector of virus diseases of potatoes and sugarbeets
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The course of study for the kindergarten and elementary grades of the training school
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Les ravageurs de la culture cotonnière malagasy avec une attention particulière à Aphis gossypii et ses ennemis naturels
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The life history of two species of plant-lice inhabiting both the witch-hazel and birch
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Genetic studies with Russian wheat aphid (Diuraphis noxia Mordvilko) in PI 294994 bread wheat (Triticum aestivum L.)
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The hop plant-louse and the remedies to be used against it ..
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Aphids of the Maritime provinces of Canada
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Ants and aphids work together
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The new science, weaponless defense
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