TY  - BOOK
AU  - Servais,Willy
AU  - Varga,Tamas
TI  - Teaching school mathematics
T2  - A Unesco source book
SN  - 0140800840
AV  - QA11 .S46
U1  - 510/.71/2 
PY  - 1971///
CY  - Harmondsworth
PB  - Penguin
KW  - Mathematics
KW  - Study and teaching (Secondary)
ER  -