TY  - BOOK
AU  - Shklarsky, D. O.
AU  - Shklarsky, D. O.
AU  - Chentzov, N.N.
AU  - Yaglom, I.M.
TI  - USSR Olympiad prblem book: selected problems and theorms of elementary mathematics
PY  - 1993///
CY  - New york
PB  - Dover, 
KW  - Mathematics -problems, exercises, etc
ER  -