TY  - BOOK
AU  - Courant,Richard
AU  - Robbins,Herbert
TI  - What is mathematics?: an elementary approach to ideas and methods
SN  - 0-19-502517-2
PY  - 1978///
CY  - Oxford
PB  - Oxford University Press
N1  - Бібліогр. : c. 511-514, Index
ER  -