000 00868nam a2200253Ia 4500
999 _c20561
_d20561
005 20210611153459.0
008 170503s9999||||xx |||||||||||||| ||und||
040 _aAranzadi Liburutegia
080 _a551.7(783/787)
100 1 _aGill, R.J.
_91437760
245 1 0 _aStratigraphy and geologic history of the Montana group and equivalent rocks, Montana, Wyoming, and North and South Dakota /
_cby J. R. Gill and W. A. Cobban.
260 _aWashington :
_bUnited States Government Printing Office,
_c1973
300 _a37 p. --
336 _2isbdcontent
_aTexto (visual)
337 _2isbdmedia
_3Impreso
_asin mediación
490 _aGeological Survey Professional Paper
490 _v776
650 _aDakota del Norte
_91418522
650 _aDakota del Sur
_91418475
650 _aEstratigrafía
_9722
650 _aMontana
_95336
650 _aWyoming
_91418467
700 1 _91418736
_aCobban, William Aubrey
_d1916-2015
942 _2cdu
942 _cBK
_2cdu