... The A B C of wireless telegraphy
Subtitle: a plain treatise on Hertzian wave signaling; embracing theory, methods of operation, and how to build various pieces of the apparatus employed
By: by Edward Trevert [pseud.] ...
Edition: [New 2d enl. ed.]
Publisher: Bubier publishing company
Published: 1904
Place of publication: Lynn, Mass
Subjects: Telegraph, Wireless.