000 003270000a22001450004500
245 _aElements of discrete mathematics
100 _aLiu, C.L.
250 _a2nd ed.
260 _aNew York
_bMcGraw Hill
_c1977
300 _axiv, 433p.
020 _a007038133X
080 _a512.5
_bL5
041 _aEN
942 _cBK
_01
999 _c119321
_d119321