908 resultados para Illinois State Water Survey
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Mode of access: Internet.
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Bibliography: p. 42-44.
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Bibliography: p. 106-107.
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"Critical Trends Assessment Progarm."--Cover.
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Exhibit guide inserted.
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Mode of access: Internet.
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Description based on: 1953.
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"Conducted by the Illinois State Geological Survey in cooperation with the Boone County Board, Winnebago County Board, Boone County Soil and Water Conservation District, Winnebage County Soil and Water Conservation District and Rock Valley College."
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"September 1992."--P. [4] of cover.
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"Critical Trends Assessment Program."--Cover.
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"June 1998."
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Cover title.
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Includes bibliographical references (p. 19-20).
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Includes bibliographical references (p. 29-33).
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Title from cover.