958 resultados para Soils - Tropics
Physiographic history and the soils, entrenched stream systems, and gullies, Harrison County, Iowa /
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Literature cited: p. 82-87.
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Caption title.
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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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Includes bibliographical references (p. 126-129) and index.
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In cooperation with Ohio Agricultural Research and Development Center, Wooster, Ohio.
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Mode of access: Internet.
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Mode of access: Internet.
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Blank pages interspersed.
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Includes bibliography.
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Mode of access: Internet.
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Mode of access: Internet.