Turner, L.B.. Wireless: a Treatise on the theory and Practice of High Frequency Electric Signalling / Textual Documents L.B.Turner. - 1st ed. / - Cambridge : At The University Press , 1931. - xvii,528p. : ill ; 22cm . Index Subjects--Index Terms: Wireless G-Technology Dewey Class. No.: 621.388 / T 855 W