Kruger, Gustav, Uhren und Zeitmessung. - 120 pages. - Hallwag Taschenbuch Technik 121 . ISBN: 3444501145 9783444501142 Subjects--Topical Terms: Clocks and watches.Clocks and watches--History.Time. Subjects--Index Terms: Global Time timekeeping Universal Decimal Class. No.: 681.11