Geology of the Libby thrust belt of northwestern Montana and its implications to regional tectonics
by Jack E. Harrison and Earle R. Cressman.
- Washington Denver, CO U.S. G.P.O. For sale by USGS Map Distribution 1993.
- iii, 42 p. ill., maps 29 cm.
- U.S. Geological Survey professional paper 1524 .