TY  - BOOK
AU  - Marek Wiklor
AU  -  Onyszkiewicz Janusz
TI  - Elements of logic and foundations of mathematics in problems
U1  - B217, M2 
PY  - 1982///
CY  - Dordrecht
PB  - D Reidel        
KW  -  Combination
KW  - Permutation
ER  -