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Direct and residual effects of organic and inorganic fertilizers on soil chemical properties, microbial components and maize yield under long-term crop rotation

Thesis (Ph. D.)(Plant Production)--University of Pretoria, 2001. / Includes bibliographical references).

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/54975588
Date January 2001
CreatorsBelay, Asfaw.
PublisherPretoria : [s.n.],
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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