57 resultados para Watersheds
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"Progress report on Illinois watersheds."--Cover.
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Caption title.
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Includes bibliographical references.
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Literature cited: p. 24-25.
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Literature cited: p. 29-30.
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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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"Supersedes PA-392, Small watershed projects under the Watershed protection and flood prevention act."
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Includes bibliographical references.
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Mode of access: Internet.
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Mode of access: Internet.
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Caption title.