TY  - BOOK
AU  - Straszewicz,S.
AU  - Smolska,J.
TI  - Mathematics problems and puzzels: from the polish mathematical olympiads 
U1  - 510 
PY  - 1965///
CY  - Oxford
PB  - Pergamon Press
KW  - Mathematics
KW  - Problems, exercises, etc
KW  - Popular works
N1  - Translation of: Zadaniaz olimpiad matematycznych
ER  -