Ordinary general meeting held in the lecture hall of the Institution of Civil Engineers, on Friday, December 19th, 1919 : [proceedings].
Wireless Society of London.
Erskine-Murray, James Robert.Transmission of electro-magnetic waves about the earth.
London :  [s.n.], 
1920.
Consists mainly of lecture: 'The transmission of electro-magnetic waves about the earth', by J. Erskine-Murray.
Reprinted from 'The Wireless World', February, 1920.
Radio waves.
Telegraph, Wireless.