http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Airplane radio telegraph transmitting sets; type SCR-65, type SCR-65-A
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.
Radio Communication Pamphlet No. 5 (2nd ed.)