992 resultados para Illinois State Water Survey


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"March 1987."

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Examines a small area of southern Cook County and northeastern Will County in Illinois--a portion of which has been designated a state Resource Rich Area.

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Examines an area in north central Illinois--a portion of which has been designated a state Resource Rich Area.

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"Examines an area of more than 1,200 square miles in east central Illinois ... designated a state Resource Rich Area."--P. iii.

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Examines an area in east central Illinois along the Indiana/Illinois border designated a state Resource Rich Area.

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"June 2008."

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Mode of access: Internet.

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GeoRef

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"A report on a conference at Zion, Illinois, which was supported by the Research Applications Directorate of the National Science Foundations, grant GI-30971".

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Illinois State Water Survey

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Illinois State Water Survey/National Atmospheric Deposition Program

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Illinois State Water Survey

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"33rd annual meeting, April 1999 North-Central section, Geological Society of America" --cover.

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Includes bibliographical references (p. 40-41)