Grinnell and Sperry Glaciers, Glacier National Park, Montana
Subtitle: a record of vanishing ice : recorded observations, during approximately 80 years of the shrinkage of the two largest glaciers in Glacier National Park
By: by Arthur Johnson.
Series: Geological Survey professional paper ; 1180; Geological Survey professional paper ;; 1180.
Publisher: U.S. Govt. Print. Off.
Published: 1980
Place of publication: Washington
Language: eng
Number of pages: 29
Subjects: Grinnell Glacier, Mont.; Sperry Glacier, Mont.; Glacier National Park (Mont.)
Notes: Bibliography: p. 29.