Catalog Record: Traffic control for freeway maintenance | HathiTrust Digital Library

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Traffic control for freeway maintenance.

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Corporate Author: National Cooperative Highway Research Program.
Language(s): English
Published: Washington : National Research Council, Highway Research Board, 1969.
Subjects: Roads > Roads / Maintenance and repair.
Traffic signs and signals.
Physical Description: 47p. : illus. ; 28cm.
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Item Link Original Source
Limited (search only)no.1 Pennsylvania State University