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/ RAILWAY LINES. TECHNICO-ECONOMIC CONSIDERATIONS AS REGARDS THEIR CHARACTERISTICS https://trid.trb.org/View/165756 Thu, 12 Mar 1981 00:00:00 GMT https://trid.trb.org/View/165756 STUDY OF PROBLEMS RELATED TO ELECTRIC ENERGY SUPPLY TO MAIN FREIGHT RAILWAY ROUTES https://trid.trb.org/View/165774 Thu, 12 Mar 1981 00:00:00 GMT https://trid.trb.org/View/165774 AN APPRAISAL OF THE TECHNICAL ASSISTANCE RECEIVED BY THE RAILWAYS OF LATIN AMERICA https://trid.trb.org/View/68601 Wed, 12 Apr 1978 00:00:00 GMT https://trid.trb.org/View/68601