TY  - BOOK
ED  - Unesco.
ED  - International Commission on Mathematical Instruction.
TI  - Documents in the social sciences: Vol. IV 
T2  - The Teaching of basic sciences
SN  - 923101546X
AV  - QA11.A1 N38
U1  - 510.7 20
PY  - 1979///
CY  - Paris
PB  - Unesco
KW  - Mathematics
KW  - Study and teaching
ER  -