TY  - BOOK
AU  - Wallis,W.D.
AU  - George,J.C.
TI  - Introduction to combinatorics
T2  - Discrete mathematics and its applications
SN  - 9781439806227 (hardcover : alk. paper)
U1  - 519.11 
PY  - 2010///
CY  - Boca Raton
PB  - Chapman & Hall/CRC
KW  - Combinatorial analysis
ER  -