000 nam a22 7a 4500
999 _c3839
_d3839
003 Biblioteca INTEMIN
005 20180531162300.0
007 ta
008 180527b xxu||||| |||| 00| 0 eng d
041 _ainglés
080 _a622
100 _aJohnson, L. A.
_93547
245 _aProperties of Utah tar sands-- south Seep Ridge area, P.R. Spring deposit
_cJohnson, L. A.; Cupps, Cecil Q.; Marchant, L. C.
260 _aWashington
_bBureau of mines
_c1975
300 _a14 p.
440 _aRI 8003
_97181
650 _aMINERIA
_93338
650 _aMINING
_92163
653 _aBETUN
653 _aBITUMEN
700 _aCupps, Cecil Q.
_98046
700 _aMarchant, L. C.
_98080
942 _2udc
_cCR