000 00431 a2200169 4500
020 _a 9781498777605
080 _a519.1
_bWAL
100 _aWallis, Walter D & George, John C
245 _aIntroduction to Combinatorics
250 _a2
260 _bCRC Press
_c2017
_aNew york
300 _axiii, 423p.
490 _aDiscrete Mathematics and Its Applications
500 _aHardbound
690 _aMathematics
942 _cBK
_03
999 _c50208
_d50208