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The effect of spirea aphid (Homoptera: aphididae) feeding and nitrogen fertilization on the growth of young apple trees, with comparisons to apple aphid /

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1989. / Vita. Abstract. Includes bibliographical references (leaves 168-179). Also available via the Internet.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/20439727
Date January 1989
CreatorsKaakeh, Walid,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish
SourceThis resource online

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