1. 1
   Transactions of the fifteenth International congress on hygiene and demography, Washington, September 23-28, 1912

   Published 1913

   Washington, Govt. print. off., 1913.

   6 v. ill., plates.

   Also issued online.

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2. 2
   Official program, XV International congress on hygiene and demography, Washington, D. C., September 23-28, 1912

   Published 1912

   [Washington? 1912]

   174 p.

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