1. Air Force Special Weapons Center: Technical documentary report AFSWC-TDR (series). 62-138. Air Force design manual: Principles and practices for design of hardened structures [with lists of references; by M. T. Davisson and others]. Bookmark Corporate/Agency Authors: Air Force Department and Defense Dept. Publisher: Air Force Department Date: [2d edition.] Dec. 1962 SuDoc number: D 301.45/20-3:62-138