TY  - BOOK
AU  - Lipschutz/ S./ Lipson/ M.L. 
TI  - Schaum''''s Solved problems  Series  2000 solved problems in discrete math
U1  - 510.76LIP 
PY  - 1992///
CY  - New york
PB  - Mc Graw Hill
KW  - Mathematics
ER  -