Übelacker, Erich. Zaman / by Erich Übelacker. - 1st ed. - Izmir : Tudem, 2006. - 48 p. : col., ill ; 29 cm. - Neden ve Nasıl 7 . - Neden ve Nasıl 7 . This book is in Turkish. Includes index. ISBN: 9944690422 Subjects--Topical Terms: Time.Time measurements.Time--History.