Cover image for Determination of economic injury levels and economic threshodls of viruliferous cereal aphids on a winter and a spring wheat
Title:
Determination of economic injury levels and economic threshodls of viruliferous cereal aphids on a winter and a spring wheat
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Physical Description:
1 reel; 35mm
DSP_DISSERTATION:
Thesis (PhD) - Purdue University, 1987

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30000003375528 MFL 6965 Non Circulating Microfilm Microfilm
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