Electric Relays : Constructional Details and Notes on the use of Magnetic, Mercury, Thermionic, and Photo-electric Relays ... with 110 diagrams and photographs
London: George Newnes Limited 1942. Later printing. viii, 184 pages. Green cloth gilt. Printed buff dust jacket. Rear board has advertisement for Dunlop & Ranken Ltd in gilt, as well as printed in black on the rear dj panel. This copy quite unusual given the US Customs Service baggage stamp..... More
