TY  - BOOK
AU  - Lipschutz, Seymour
AU  - Lipson, Marc Lars
TI  - Theory and problems of discrete mathematics
SN  - 0-07-463710-X
U1  - 510 
PY  - 2002/// # 1999
CY  - New Delhi
PB  - Tata McGraw Hill
ER  -