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
Contenido: v.12. Education
EDUCACION
CULTURA
ADOLESCENTES
TEORIA DE LA EDUCACION
ESTADOS UNIDOS
37:061.4