35 resultados para Mechanical practices for the conservation of soil
em University of Michigan
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Subtitle varies slightly.
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Raymond H. Burke, chairman of subcommittee.
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"The greater part of the material used was selected from the files of the Work Projects Administration Erosion history project, 701-2-240, Columbia, S.C."--Foot-note, p. 1.
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Mode of access: Internet.
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Mode of access: Internet.
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"July 1980."
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Cover title.
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Bibliography: leaves 110-117.
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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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Mode of access: Internet.