Map showing total thickness of the Swift Formation, Montana / Department of the Interior, United States Geological Survey ; by R.D. Feltis.

Helena, Mont. : The Survey ; Lakewood, CO : For sale by Open-File Services Section, Western Distribution Branch, USGS, 1982.

1 map ; 45 x 68 cm., folded in envelope 24 x 30 cm.

Scale 1:1,000,000 (W 113⁰--W 104⁰/N 49⁰--N 45⁰)

Includes bibliography, text, and location map on sheet.

English

June 01, 2002