TY  - BOOK
AU  - LIU,C.L.
TI  - Elements of Discrete Mathematics
SN  - 9780070669130
U1  - 511 
PY  - 2009///
CY  - Delhi
PB  - Tata McGraw-Hill
KW  - Combinatorial analysis
KW  - Algebra, Abstract
N1  - Includes bibliographies and index
ER  -