507 resultados para Agricultural-research
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Nitrogen fixation in alfalfa : responses to bidirectional selection for associated characteristics /
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"Issued December 1981"--2d prelim. page.
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Bibliography: p. 44-45.
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Prepared in cooperation with Oregon Agricultural Experiment Station.
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Cover title.
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"Literature cited": p. 8-9.
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"Literature cited": p. 119-122.
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Bibliographical footnotes.
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"Literature cited": p. 42-43.
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Bibliography: p. 37-39.
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Cover title.
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Mode of access: Internet.
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Bibliography: p. 25.