00302nam a2200109 a 450000500170000002000180001708200130003510000190004824500530006726000440012030000280016420251203110932.0  a9788120333321  a511bCHO  aChowdhary. K.S  aFundamentals of discrete mathematical structures  aNew DelhibPrentice-Hall of Indiac2008  axiiic273p.c24 cm.cPB