TY  - BOOK
AU  - Servais,W.
AU  - Varga,Tamas
TI  - Teaching school mathematics : : a UNESCO sourcebook  / 
U1  - 510.07 SER 
PY  - 1971///
CY  - Paris : 
PB  - Unesco, 
KW  - Mathematics
KW  - Study and teaching
ER  -