000 00301nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a65.012.122
_bJAG
100 _aJagjit Singh
245 0 _aOperations research
260 _aMiddlesex
_bPenguin
_c1971
650 _aOperations research
942 _cBK
999 _c23046
_d23046