A. M. Harper
Abstract
A. M. Harper; English Grain Aphid : Effect on Yield of Wheat in Alberta1, Journal of Economic Entomology, Volume 66, Issue 6, 1 December 1973, Pages 1326, https
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A. M. Harper; English Grain Aphid : Effect on Yield of Wheat in Alberta1, Journal of Economic Entomology, Volume 66, Issue 6, 1 December 1973, Pages 1326, https
Key concepts: Aphid, Biology, Yield (engineering), Grain yield, Entomology, Agriculture, Agricultural economics, Agronomy