956 resultados para Water quality indexes


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"October 1994."

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Latest issue consulted: Federal fiscal year 1988.

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Title from caption.

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Issues for <1970- > have title: Catalog of information on water data. Index to surface water section.

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Prepared for the National Commission on Water Quality.

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"August 1997."

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Mode of access: Internet.

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Spine title: Ground-water conditions, well yields in fractured rocks, southwestern Nevada County, CA.