Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ ANNUAL BOOK OF ASTM STANDARDS 1977 -- PART 15. ROAD AND PAVING MATERIALS; BITUMINOUS MATERIALS FOR HIGHWAY CONSTRUCTION, WATERPROOFING AND ROOFING, AND PIPE; SKID RESISTANCE https://trid.trb.org/View/55665 Tue, 27 Dec 1977 00:00:00 GMT https://trid.trb.org/View/55665 ANNUAL BOOK OF ASTM STANDARDS, 1977 -- PART 19. NATURAL BUILDING STONES; SOIL AND ROCK; PEATS, MOSSES, AND HUMUS https://trid.trb.org/View/55666 Tue, 27 Dec 1977 00:00:00 GMT https://trid.trb.org/View/55666