TY  - BOOK
AU  - Courant,Richard
AU  - Robbins,Herbert E.
TI  - What is mathematics?: an elementary approach to ideas and methods 
SN  - 0195025172
PY  - 1941///
CY  - Oxford
PB  - Oxford University Press
KW  - Mathematics
N1  - Suggestions for further reading : p. 511- 514
ER  -