(Saude publica e bem-estar infuntil no. 22, Junho de 1928.) [Del Boletim da Uniao Pan-Americana, Junho, 1928.]
Notes:
(Saude publica e bem-estar infuntil no. 22, Junho de 1928.) [Del Boletim da Uniao Pan-Americana, Junho, 1928.] † Distribution Made by Issuing Office. Paper, 5c.; subscription price for 12 issues of series, 50c.
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† Distribution Made by Issuing Office. Paper, 5c.; subscription price for 12 issues of series, 50c.