[26721] North American, Strata: Proterozoic, Period: 11590, Rec 2225

[Rec № 2225] Stratigraphy and depositional environment of the St. Regis Formation of the Ravalli Group (Precambrian Belt Megagroup) northwestern Montana and Idaho

Hrabar, S. V.
Doctoral dissertation, University of Cincinnatti, 1971, « Missing Vol »