TY  - BOOK
AU  - Lipschutz, Seymour
AU  - Lipson, Marc Lars
TI  - 2000 solved problems in discrete mathematics, Seymour Lipschutz, eng
T2  - Schaum's solved problems series
SN  - 0071126902
U1  - 510.76, 
PY  - 1992///
CY  - New York, McGraw-Hill, US
ER  -