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/ ARCTIC AND MIDDLE NORTH TRANSPORTATION https://trid.trb.org/View/3732 Sat, 21 Apr 1973 00:00:00 GMT https://trid.trb.org/View/3732 THE ARCTIC BASIN https://trid.trb.org/View/3731 Fri, 21 Apr 1972 00:00:00 GMT https://trid.trb.org/View/3731 POLAR TRANSPORTATION REQUIREMENTS STUDY REPORT. VOLUME 1 https://trid.trb.org/View/89 Fri, 30 Oct 1970 00:00:00 GMT https://trid.trb.org/View/89