000 nam a22 7a 4500
999 _c4079
_d4079
003 Biblioteca de INTEMING
005 20180605195722.0
007 ingles
008 180605b xxu||||| |||| 00| 0 eng d
041 _aingles
080 _a622 : 549 (797) (047)
110 _aU.S. Bureau of mines.
_952
245 _aRingelmann smoke chart
_cU.S. Bureau of mines.
250 _aIC 8333
260 _aWashington
_bBureau of mines
_c1967
650 _aCUADRO
_98339
650 _aMINERALOGIA
_93338
650 _aMINERIA
_965
650 _aHUMO
_92840
942 _2udc
_cBK