TY  - BOOK
AU  - Erickson, Martin J
TI  - Introduction to combinatorics
T2  - Wiley-interscience series in descrete mathematics and optimi
SN  - 0-471-15408-3
U1  - 511.6/ERI 
PY  - 1996///
CY  - New York
PB  - John Wiley
KW  - Combinatorial analysis
KW  - Mathematics
ER  -