• publisher: New York : McGraw-Hill Book Company
  • creator: Lauer, Henri Brown, Harry L
  • contributor: Brown, Harry L.
  • Keyword: Telegraph, Wireless. Radio.
  • years: 1920.
  • pages: xv, 300 p., 12 p. of plates :
  • class: TK5741
  • notes: Includes index.
  • download: pdf file