The Montana lobe of the Keewatin ice sheet
By: Fred Harvey Hall Calhoun.
Series: Geological Survey (U.S.). Professional paper -- no. 50.; Professional paper (Geological Survey (U.S.)) -- no. 50.
Publisher: Govt. Print. Off.
Published: 1906
Place of publication: Washington
Language: eng
Number of pages: 62
Subjects: Glacial epoch.; Geology -- Montana.
Other titles: Keewatin ice sheet.
Notes: Subject series: B, Descriptive geology, 79.