000 00299nam a2200121Ia 4500
100 _aWiitala, Stephen A.
020 _a0-07-070169-5
942 _cBK
245 _aDiscrete mathematics
_bA unified approach
260 _aMcgraw-hill company, New York
_c1987
082 _a519.4 Wii
300 _axi, 449
999 _c63291
_d63291