Guardrails, barriers, and sign supports 5 reports.

Guardrails, barriers, and sign supports 5 reports.

書目詳細資料
Corporate Authors: National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, National Research Council (U.S.). Highway Research Board. Committee on Guardrails, Median Barriers, and Sign, Signal, and Lighting Supports
格式: 圖書
語言:English
出版: Washington, D.C. Highway Research Board 1967.
叢編:Highway research record no. 174.
Publication (National Research Council (U.S.)) no. 1505.
主題:
Roads > Guard fences.
Traffic signs and signals > Break-away supports.