Title: Fourth International congress on school hygiene, Buffalo, New York, U.S.A., August 25-30, 1913. Transactions
Subjects: Congresses, International Congress on School Hygiene (4th : 1913 : Buffalo), School hygiene, Étude et enseignement, Hygiene, Hygiène scolaire, Congrès, Santé mentale, Éducation sanitaire, International Congress on School Hygiene (4th : 1913 : Buffalo, N.Y.)