By A. Shore. 163 pages. Price 3s. 6d. (Postage 4d.)
Telephony without Wires.
By Philip R. Coursey, B.Sc., A.M.I.E.E., F.P.S.L. 414 pages. Price 15s. (Postage 6d.)
The Wireless World.
A Monthly Magazine devoted to Wireless Telegraphy and Telephony. Price 9d. (Postage 3d.) Annual Subscription, 11s. post free.
The Radio Review.
A Monthly Record of Scientific Progress in Radio-telegraphy and Telephony. Price 2s. 6d. (Postage 3d.) Annual Subscription, 30s. post free.
Conquest.
A Popular Illustrated Monthly Magazine dealing with Science, Industry and Invention. Price 1s. (Postage 3d.) Annual Subscription, 15s. post free.
Continuous Wave Wireless Telegraphy. Part I.