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Washington: United States Government Printing Office, 1930 ; Online-Ausgabe, Kiel: ZBW; Hamburg, 2022
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American Chemical Society (ACS), 1952
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Washington, DC, 1921 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1933 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1932 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1931 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1930 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1937 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1937 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Ovid Technologies (Wolters Kluwer Health), 2010
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Washington, DC, 1917 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1937 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1935 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1933 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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American Academy of Pediatrics (AAP), 1976
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Informa UK Limited, 1972
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Mathematical Association of America, 1972
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Washington, DC, 1936 ; Online-Ausg., Chester, Vt: NewsBank, inc, 2007
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American Medical Association (AMA), 2022
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American Medical Association (AMA), 2022