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Elsevier BV, 1991
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Elsevier BV, 1990
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JSTOR, 1989
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American Geographical Society, 1989
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Georg Thieme Verlag KG, 1989
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Elsevier BV, 1988
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American Chemical Society (ACS), 1988
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Elsevier BV, 1987
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Elsevier BV, 1987
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Elsevier BV, 1987
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American Chemical Society (ACS), 1983
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Elsevier BV, 1982
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American Chemical Society (ACS), 1982
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American Chemical Society (ACS), 1980
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American Chemical Society (ACS), 1981
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American Chemical Society (ACS), 1981
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Elsevier BV, 1981
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American Chemical Society (ACS), 1977
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American Chemical Society (ACS), 1976
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American Chemical Society (ACS), 1975