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Washington, DC, 1969 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Washington, DC, 1970 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Washington, DC, 1975 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2009
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Washington, DC, 1971 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Washington, DC, 1971 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Washington, DC, 1973 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2009
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Washington, DC, 1972 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2009
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Washington, DC, 1978 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2009
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Washington, DC, 1978 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2009
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JSTOR, 1996
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JSTOR, 1964
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American Chemical Society (ACS), 1971
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Wiley, 1971
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BMJ, 2022
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Elsevier BV, 2022
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Springer Science and Business Media LLC, 2018
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American Association for the Advancement of Science (AAAS), 2016