TY  - BOOK
AU  - Courant,Richard
AU  - RobbEngs,Herbert
TI  - What is Mathematics, an Elementary Approach to Ideas and Methods
U1  - 510 
PY  - 1941///
CY  - Nueva York
PB  - Oxford University Press
KW  - HISTORIA DE LA MATEMATICAS
KW  - MATEMATICAS
ER  -