958 resultados para Illinois. Bureau of Water
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On cover: Investigations of Illinois surface waters.
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"April 1997."
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"DOWR/SPR/91-001."
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Cover title.
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"OWR/SPR/01-001"
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Vols. for 188 -1893 include the annual reports of mine inspectors; 1894-1898 include the ... annual reports of the state inspectors of mines.
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"This report was financed in part by a grant from the U.S. Environmental Protection Agency under section 314 of the Clean Water Act."
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Cover title.
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"DOWR/SPR/94-001."
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Bibliography: p. 26.
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"Contract report 655"--Cover.
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"July 1992."
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Description based on: No. 3 (1958-1962).
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"IEPA/WPC/84-004."-- Cover.
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"In accordance with Public Act 85-1301." -- Cover.