http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Development of Fan-Type Ultra-High-Frequency Radio Markers as Traffic Control and Let-Down Aid
1 online resource (13 pages), digital, PDF file
Contains illustrations, diagrams, and photographs.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2016 digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.