19 resultados para Acid rain.
em University of Michigan
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"January 1980."
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"June 1988."
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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"Printed: October 1987."
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"June 1986."
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Mode of access: Internet.
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Mode of access: Internet.
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Reuse of record except for individual research requires license from Congressional Information Service, Inc.
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Mode of access: Internet.
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Mode of access: Internet.
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"No. 125."
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Mode of access: Internet.
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Mode of access: Internet.