TY  - BOOK
AU  - Shkliarskii, David Oskarovich
AU  - Chentsov, Nikolai Nikolaevich,
AU  - Iacfom, Isaak Moiseevich,
AU  - Sussman, Irving
AU  - Shkliarskii,David Oskarovich
TI  - The USSR Olympiad problem book: selected problems and theorems of elementary mathematics 
SN  - 0-486-27709-7
AV  - QA43 S4513 1993
PY  - 1993///
CY  - New York
PB  - Dover
KW  - Matemáticas
KW  - Problemas, ejercicios, etc
ER  -