TY  - BOOK
AU  - Lipschutz, Seymour.
TI  - Discrete Mathematics : 2000 Solved problems,  Schaum`s series / 
SN  - 0-07-038031-7
U1  - B 
CY  - New Delhi : 
PB  - McGraw-Hill, Inc.
KW  - Mathematics <Modern Mathematics>
ER  -