National Research Council (U.S.). Highway Research Board. (1973). Transportation systems planning and resource allocation: 10 reports prepared for the 52nd annual meeting. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering.
Lua i Stíl Chicago (17ú heag.)National Research Council (U.S.). Highway Research Board. Transportation Systems Planning and Resource Allocation: 10 Reports Prepared for the 52nd Annual Meeting. Washington, D.C: Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering, 1973.
Lua MLA (9ú heag.)National Research Council (U.S.). Highway Research Board. Transportation Systems Planning and Resource Allocation: 10 Reports Prepared for the 52nd Annual Meeting. Highway Research Board, Division of Engineering, National Research Council, National Academy of Sciences--National Academy of Engineering, 1973.