000 00656nam a2200241Ia 4500
003 OSt
005 20220918213833.0
006 a|||||r|||| 00| 0
007 ta
008 220917b |||||||| |||| 00| 0 eng d
024 _a134,545
037 _cTextual
040 _aARTS
_cARTS
_beng
041 _2eng
_aeng
082 _aX8(F551):89P, M0
100 _aDouglas W J
_9128656
245 0 _aProduction systems analysis
_b In underground coal mines
260 _aN York
_bMcgHills
_c1980
300 _axii, 369p.
_ccm.
650 _aECONOMICS
942 _hX8(F551):89P, M0
_cTEXL
_2CC
999 _c257646
_d257646