TY  - BOOK
AU  - Lipschutz, Seymour
AU  - Lipson, Marc Lars
TI  - 2000 solved problems in discrete mathematics
T2  - Schaum's solved problems series
SN  - 0070380317
U1  - 511.076 
PY  - 1992///
CY  - New York
PB  - McGraw-Hill Inc.
ER  -