Pennsylvania. State Board of Health and Vital Statistics. The Annals of hygiene. University of Pennsylvania Press [etc.].
Citace podle Chicago (17th ed.)Pennsylvania. State Board of Health and Vital Statistics. The Annals of Hygiene. Philadelphia: University of Pennsylvania Press [etc.].
Citace podle MLA (8th ed.)Pennsylvania. State Board of Health and Vital Statistics. The Annals of Hygiene. University of Pennsylvania Press [etc.].
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