379.1: Fracture Toughness Of Bridge Steels (First Quarterly Report) sponsored by U.S. Department of Transportation Federal Highway Administration Contract No. DOT-FH-11-7664 prepared by R. Roberts, G. Irwin, B. Yen, and K. Pietrzak, March 1971, 1971

379.1: Fracture Toughness Of Bridge Steels (First Quarterly Report) sponsored by U.S. Department of Transportation Federal Highway Administration Contract No. DOT-FH-11-7664 prepared by R. Roberts, G. Irwin, B. Yen, and K. Pietrzak, March 1971, 1971, Box: 12; Folder: 12. Council on Tall Buildings and Urban Habitat Records, SC MS 0263. Lehigh University Grant Projects. https://archivesspace.lib.lehigh.edu//repositories/7/archival_objects/59162 Accessed May 20, 2026.