944 resultados para Data processing methods
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Mode of access: Internet.
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Mode of access: Internet.
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"The Illinois Environmental Protection Agency monitors surface waters (i.e. lakes and streams) through a variety of programs. The most extensive is the Ambient Water Quality Monitoring Network (AWQMN) which consists of 203 stream stations statewide sampled on a 6 week cycle since October 1977." -- p. 1.
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Cover title.
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Cover title.
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Includes bibliography.
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Bibliography: p. 325-327.
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Mode of access: Internet.
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"December 1978."
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Includes index.
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Includes index.
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Includes index.
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Includes indexes.
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"13 May 1985"--[Vol. 2].
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Mode of access: Internet.