http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
history of vertical-incidence ionsphere sounding at the National Bureau of Standards
Vertical incidence ionosphere sounding at the National Bureau of Standards
Central Radio Propagation Laboratory (U.S.)
1 online resource (vi, 134 pages) : illustrations.
Title from title screen (viewed Mar. 4, 2014).
Includes bibliographical references (pages 118-134).