000 nam a22 7a 4500
999 _c4095
_d4095
003 Biblioteca-INTEMIN
005 20180606133437.0
008 180606b xxu||||| |||| 00| 0 eng d
080 _a622:552.578.3
100 _aHarak, A.E.
_98354
245 _aSome results from the operation of a 150-tom oil shale retort (BM-TPR 30)
_cHarak, A.E.
260 _aWashington
_bBureau of mines
_c1971
650 _aPIZARRA BITUMINOSA
_98355
942 _cBK