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Berlin: von Decker, 1930
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New York, N.Y: I. Washburn, [1945] ; Online-Ausg.: Alexandria, VA: Alexander Street Press, 2003
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Ovid Technologies (Wolters Kluwer Health), 1960
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The American Journal of Nursing Company, 1956
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The American Journal of Nursing Company, 1956
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Ovid Technologies (Wolters Kluwer Health), 1956
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Ovid Technologies (Wolters Kluwer Health), 1957
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JSTOR, 1957
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The American Journal of Nursing Company, 1957
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American Sociological Society, 1951
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Informa UK Limited, 1951
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SAGE Publications, 1951
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JSTOR, 1956
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JSTOR, 1958
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JSTOR, 1956