988 resultados para Agricultural soils


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"September 1967."

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"August 1966."

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Includes indexes.

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"EPA-905/9-91-006B"--Vol. 2.

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"TRBSP-05-11/79(1 M)"--v.2

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"The work represented by this publication was supported by the Bankhead-Jones research fund. It was initiated in the Bureau of chemistry and soils (now the Bureau of agricultural chemistry and engineering) and was later transferred to the Bureau of plant industry."--P. 1.

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In cooperation with Ohio Agricultural Research and Development Center, Wooster, Ohio.