992 resultados para Illinois. Dept. of Conservation
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"All tours effective until May 31, 2001, unless otherwise noted."--P. [4] of cover.
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Mode of access: Internet.
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"7/09"--Colophon.
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Cover title.
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"April 1, 1986."
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Cover title.
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Mandated by PA 81-178.
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Project no. 80.264.
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Project no.: 80.235.
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Looseleaf for updating.
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Examines six subbasins of the Du Page River, covering approximately 372 square miles in northeastern Illinois, mostly in Du Page and Will Counties with small portions in Cook, Kane, Kendall, and Grundy Counties. One subbasin, the East Branch Du Page River, has been designated a state "Resource Rich Area".
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"November 1986."
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"October, 1954."
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"Project no. 80-254."
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"Study was conducted in cooperation with the U.S. Department of Transportation, Federal Highway Administration."