Helena Valley pumping plant and tunnel
Subtitle: constructed 1957-1959, Missouri River Basin project, Montana
By: United States Department of the Interior, Bureau of Reclamation
Series: Technical record of design and construction
Publisher: The Bureau
Published: 1961
Place of publication: Denver, Colo
Language: eng
Number of pages: 163
Subjects: Pumping stations; Tunnels; Missouri River Basin Project (U.S.). Helena Valley Unit
Notes: "March 1961."

Bibliography: p. 163.