TY  - GEN
AU  - Andreescu, Titu
AU  - Feng, Zuning
TI  - A path to combinatorics for undergraduates: counting strategies
SN  - 0817642889
U1  - 511.6 
PY  - 2004///
CY  - Boston
PB  - Birkhauser
KW  - Combinatorics
ER  -