International Congress of Hygiene and Demography Brussels. (1903). Compte rendu du Congrès . P. Weissenbruch.
Lua i Stíl Chicago (17ú heag.)International Congress of Hygiene and Demography Brussels. Compte Rendu Du Congrès . Bruxelles: P. Weissenbruch, 1903.
Lua MLA (8ú heag.)International Congress of Hygiene and Demography Brussels. Compte Rendu Du Congrès . P. Weissenbruch, 1903.
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