TY  - BOOK
ED  - UNESCO
TI  - Eeducation of disadvantaged groups and multiple class teaching: Studies and innovative approaches. 
U1  - 371.3 UNE 
PY  - 1981///.
CY  - Bangkok : 
PB  - Unesco, 
KW  - Education of desadvantaged groups and multiple class teaching.
ER  -