000 00345nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a8122400906
082 _a5
082 _b113 LE
100 _a"Levy,Leon,S."
245 0 _aDiscrete Structure Of Co
260 _aNew Delhi
260 _bWiley Eastren
260 _c1994
300 _a310
999 _c47013
_d47013