000 00353nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a471997498
082 _a511
082 _b6 COM
100 _a"Christofides, Nicos et.a"
245 0 _aCombinatorial Optimizati
260 _aNew York
260 _bJohn Wiley
260 _c1979
300 _a421
999 _c28570
_d28570