32 resultados para phosphorus use efficiency
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Mode of access: Internet.
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Mode of access: Internet.
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"Grant No. 802647."
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Item 535
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Mode of access: Internet.
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Mode of access: Internet.
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Mimeographed copy.
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Mode of access: Internet.
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National Highway Traffic Safety Administration, Washington, D.C.
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"Work Performed Under Contract No. AC02-77CH00178."
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Includes bibliographical references (pages 37-40).
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Includes index.
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Mode of access: Internet.
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National Highway Traffic Safety Administration, Washington, D.C.
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Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, Washington, D.C.