TY  - BOOK
AU  - Efron, Alexander
TI  - The teaching of physical sciences in the secondary schools of the United States, France, and Soviet Russia
PY  - 1937///
CY  - New York
PB  - Columbia University Press
KW  - ESTADOS UNIDOS
KW  - FILOSOFIA
KW  - FISICA
KW  - FRANCIA
KW  - INVESTIGACION EDUCATIVA
KW  - METODOS PEDAGOGICOS
KW  - URSS
ER  -