000 00344nam a2200157Ia 4500
003 0STCL
008 150530s9999 xx 000 0 und d
040 _aSTCL
_cSTCL
100 _aCohen, S.S.
245 _aOperational research
260 _bELBS
_c1987
546 _aEnglish
942 _2ddc
_cBK
999 _c26458
_d26458
005 20220125170051.0