TY  - BOOK
ED  - International Group For The Psychology Of Mathematics Education
TI  - International Group For The Psychology Of Mathematics Education: Proceedings
AV  - QA12 I5.4
PY  - 1990///
CY  - México
PB  - CONACYT
KW  - Matemáticas
KW  - Estudio y enseñanza
KW  - Psicopedagogía
ER  -