Radio Beam and Broadcast: Its Story and Patents
London: Ernest Benn, 1925. Later printing. Octavo (9" x 6"); 192p. Plates, diagrams, and illustrations throughout. Addenda slip tipped-in at start of Chapter 1. Blue cloth with gilt lettering to spine. Covers edgeworn witih some bumping to corners and spine ends, with a small patch of discoloration on front center..... More