TY  - BOOK
AU  - Shklyarsky D. O.
AU  -  Chentsov I. M.
AU  -  Yaglom I. M.
TI  - Selected problems and theorems in elementary mathematics: Arithmetic and Algebra
U1  - B, L9 
PY  - 1979///
CY  - Moscow
PB  - Mir Pub        
KW  - Mathematics
ER  -