TY  - BOOK
AU  - Oehser,Paul H
AU  - 
ED  - 10-18 mayo 1940
ED  - Education
ED  - 
ED  - 
TI  - Proceedings of the eighth american scientific congress
CY  - Washington
KW  - Educación
N1  - Intitución patrocinadora: The Government of the United States of America
ER  -