Abstract
The reports have a separate entry. See A 7099 – A 7103 and A 9186.
Design of sign supports and structures. Papers presented at the 50th Annual Meeting of the Highway Research Board HRB, 1971.
Year
Publication
Library number
A 9185 S IRRD 61575 t/m 61580
Source
Washington, D.C., Highway Research Board HRB, 1971, Pp.; Highway Research Record ; HRR 346
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