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Proposed Revision for Specification for Reflex-Reflective Materials for Highway Signs
1954
Preserved Fulltext
There are several pertinent factors and considerations that have a direct bearing on the requirements contained in the attached Recommended Special Specification No. 50-R, and it seems appropriate to record them here as reference material either in support of the specification or as information.
doi:10.13023/ktc.rr.1954.97
fatcat:5xhuislvvzexhaaodv3oziphzu