TY  - BOOK
AU  - International congress of Mathematical Education
ED  - International congress of Mathematical Education
TI  - Proceedings :  developments in mathematical education ed by A G Howson
U1  - T:3 (B)p1, N72, L3 
PY  - 1973///
CY  - London
PB  - C U P     
KW  - EDUCATION
ER  -