23 resultados para Environmental efficiency, Environmental productivity, Materials balance, Nutrient efficiency, OECD agriculture
em University of Michigan
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Bibliography: p. 33-35.
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Mode of access: Internet.
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"ERS-672."
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"Zeitschrift der Vereinigung für angewandte Botanik" (varies)
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"B-239019.1"--P. 1.
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Editors: 1919-26, P. P. Graebner, E. F. Gilg (with K. Müller, 1919-22; with K. Snell, 1922-26; with A. Voigt, 1923-26)--1927- K. Snell.
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Mode of access: Internet.
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Item 1005-C
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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"June 1988."
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Mode of access: Internet.
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Mode of access: Internet.