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- Hospital Real de Indios (Mexico City, Mexico)2
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- Huerta, Ramón S., author1
- Hugo-Marcus, Samuel.1
- Huici y Lardizabal, Joaquin, author1
- Humphreys, F. (Frederick), 1816-19002
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- Ibarra Loring, Eduardo.1
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- Ibáñez, Pedro M. (Pedro María), 1854-1919, author1
- Iglesias, Manuel S., author1
- Instituto Homeopático do Brasil.1
- Instituto Médico Nacional (Mexico), author.1
- International Conference on AIDS 1989 : Montréal, Québec)1
- International Congress of Military Medicine and Pharmacy 1939 : Washington, D.C.) author.1
- International Congress on Diseases of the Chest 1954 : Barcelona, Spain)1
- Iñigo, José, author1