Proceedings of the eighth American scientific congress held in Washington May 10-18, 1940, under the auspices of the government of the United States of America ... - Washington : Dept. of State, 1941-1943 - 12 v. ; 24 cm.

Contenido: v.12. Education


EDUCACION
CULTURA
ADOLESCENTES
TEORIA DE LA EDUCACION


ESTADOS UNIDOS

37:061.4

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