TY  - BOOK
AU  - Vilenkin,Naum
TI  - Combinatorial mathematics for recreation
U1  - 512.5 
PY  - 1972///
CY  - Moscow
PB  - MIR Pub.
KW  - Combinatorial analysis
KW  - Algebra
KW  - Mathematics
KW  - Permutation
N1  - Revision and translation of Kombinatorika
ER  -