243 resultados para Aquatic resources conservation
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Mode of access: Internet.
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Mode of access: Internet.
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"November 1982."
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"July 1979"
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Cover title: 1982 national resources inventory : basic statistics for New York State.
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Reuse of record except for individual research requires license from Congressional Information Service, Inc.
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"Serial no. 97-Y."
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Reuse of record except for individual research requires license from Congressional Information Service, Inc.
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"Prepared by the United States Geological Survey in collaboration with the Washington State Department of Conservation, Division of Mines and Geology, and the United States Bureau of Reclamation, and other agencies, at the request of Senator Henry M. Jackson, chairman of the Committee on Interior and Insular Affairs, United States Senate."
The role of aquatic vascular plants in the eutrophication of selected lakes in western Massachusetts
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"A project supported under Section 100, Water resources research act of 1964 (p. L. 88-379."
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Mode of access: Internet.
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Mode of access: Internet.
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At head of title: State of Louisiana.
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"This bulletin contains all laws, rules and regulations of the Department of Conservation in relation to minerals from the year 1930 to 1934 inclusive. Laws, rules and regulations prior to 1930 are contained in the edition of 1930."
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Description based on: Vol. 1, no. 2 (Nov. 1940); title from cover.