TY  - BOOK
AU  - Gardiner,A.
TI  - Discovering mathematics: the art of investigation 
SN  - 0198532652 (U.S. : pbk.) :
AV  - QA63 .G37 1987
U1  - 510 19
PY  - 1987///
CY  - Oxford [Oxfordshire], New York
PB  - Clarendon Press, Oxford University Press
KW  - Problem solving
KW  - Mathematics
KW  - Problems, exercises, etc
N1  - Includes index
UR  - l
ER  -