Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. 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/ FORM AND STRUCTURE OF CONCRETE SLEEPERS, IN RELATION TO THE LOADS TO BE SUPPORTED IN SERVICE. PROGRESS REPORT https://trid.trb.org/View/15129 Fri, 08 Jul 1994 00:00:00 GMT https://trid.trb.org/View/15129 TECHNICAL AND ECONOMICAL STUDY OF TESTED TYPES OF CONCRETE SLEEPERS. BEHAVIOUR OF ORE TEST SECTIONS. (2ND OBSERVATION PERIOD 1965-1966). EFFECTS AND DERAILMENTS ON CONCRETE SLEEPERS https://trid.trb.org/View/7686 Thu, 22 Jan 1976 00:00:00 GMT https://trid.trb.org/View/7686