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Cambridge, Mass.: Harvard Univ. Press, 1968
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s.l.: Harvard University Press, 1968 ; 1968
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Ovid Technologies (Wolters Kluwer Health), 2010
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American Public Health Association, 1960
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American Public Health Association, 1962
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JSTOR, 1958
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JSTOR, 1953
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JSTOR, 1969
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Elsevier BV, 1955
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JSTOR, 1952
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Elsevier BV, 1949
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JSTOR, 1969
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JSTOR, 1968
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Ovid Technologies (Wolters Kluwer Health), 1961
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American Public Health Association, 1960
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JSTOR, 1955
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JSTOR, 1955
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American Diabetes Association, 1954
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JSTOR, 1948
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American Public Health Association, 1943