TY  - BOOK
AU  - Chen,Chuan-Chong
AU  - Koh,Khee-Meng
TI  - Principles and techniques in combinatorics
SN  - 9810211392
U1  - 511.6 
PY  - 1992///
CY  - Singapore
PB  - World Scientific Pub. Co.
KW  - Combinations
KW  - Combinatorial analysis
KW  - Permutations
ER  -