East Helena route study
Subtitle: U.S. 12 and 287, Fed. Aid Proj. F-77(17)
By: [prepared by Montana State Highway Commission, Preconstruction Division]
Publisher: Montana State Highway Commission
Published: 1970
Place of publication: Helena, Mont
Language: eng
Number of pages: 76
Subjects: Highway planning; Roads; Design and construction; Traffic surveys; Traffic flow
Notes: Title from cover.

"June 1970."