23 x 15.5 cm, hardcover, blue cloth binding with gilt lettering to spine, xii, 184 pages, Text in Dutch, pages aged and toned, very good condition, see picture.
Part of the Philips Technische Bibliotheek series. Author was an engineer (Dipl.-Ing.) at the Natuurkundig Laboratorium of N.V. Philips' Gloeilampenfabrieken in Eindhoven.
