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Lawrence: Regents Press of Kansas, ©1977 ; [Place of publication not identified]: HathiTrust Digital Library, 2010
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Lawrence: Regents Press of Kansas, 1977
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[Erscheinungsort nicht ermittelbar]: University Press of Kansas, 1977
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JSTOR, 1978
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Oxford University Press (OUP), 1978
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Centers for Disease Control and Prevention (CDC), 2014