National Research Council (U.S.). Highway Research Board. (1960). Road roughness and skidding measurements, 1960: Presented at the 39th annual meeting, January 11-15, 1960. National Academy of Science - National Research Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Research Council (U.S.). Highway Research Board. Road Roughness and Skidding Measurements, 1960: Presented at the 39th Annual Meeting, January 11-15, 1960. Washington, D.C: National Academy of Science - National Research Council, 1960.
Παραπομπή σε μορφή MLA (9th εκδ.)National Research Council (U.S.). Highway Research Board. Road Roughness and Skidding Measurements, 1960: Presented at the 39th Annual Meeting, January 11-15, 1960. National Academy of Science - National Research Council, 1960.
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