243 resultados para Aquatic resources conservation


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"Examines an area in north central Illinois along the Wisconsin/Illinois border ... designated a state Resource Rich Area."--P. iii.

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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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"Critical Trends Assessment Program."--Cover.

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The Critical Trends Assessment Program (CTAP) documents changes in ecological conditions.

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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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"December 1996"--P. [2] of cover.

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"October 1996"--P. [22].

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"December 1996"--P. [2] of cover.

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"February 2000"--P. [3] of cover.

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"August 1999"--P. [4] of cover

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Includes index to map sheets.

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"July 2007"--p. 4 of cover.

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Vols. after Series 1963, no. 1 lack series year and numbering.