000 00781cam a22002411 4500
001 gs 62000273
003 DLC
005 20260227111411.0
008 740920s1962 xx 000 0 eng
010 _ags 62000273
035 _a(OCoLC)1017665
040 _aDLC
_cNRU
_dOCoLC
_dDLC
042 _apremarc
050 0 0 _aQE133
_b.P46
100 1 _aPerry, Eugene S.
_q(Eugene Sheridan),
_d1892-
245 1 0 _aMontana in the geologic past.
260 _aButte,
_bMontana School of Mines,
_c1962.
300 _avi, 78 p.
_billus., port., maps (1 fold.) diagrs., tables.
_c28 cm.
490 1 _aMontana. Bureau of Mines and Geology. Bulletin 26
504 _aBibliography: p. 77-78.
650 0 _aGeology
_zMontana.
810 2 _aMontana Bureau of Mines and Geology.
_tBulletin ;
_v26.
999 _c29649
_d29649