Roentgenographic technicians War Department technical manual United States. Department of the Army. Office of the Surgeon General, author. Technology, Radiologic Radiography -- methods Patient Positioning Military Medicine Washington : War Department, July 3, 1941 1941 Text Illustrations 223 pages nlm:nlmuid-45420630R-bk 45420630R http://resource.nlm.nih.gov/45420630R English The National Library of Medicine believes this item to be in the public domain.