Highway tunnel operations.
Series: Synthesis of highway practice ;; 31
Publisher: Transportation Research Board, National Research Council
Published: 1975
Place of publication: Washington
Language: eng
Number of pages: 29
Subjects: Tunnels -- United States.
Notes: Bibliography: p. 24-25.
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
"Project 20-5 FY '73."