Aude, Helmut Rostock : A Hanseatic City on the Baltic / Helmut Aude ; Photos by Dorit Gatjen and Uwe Seemann ; English translation Patrick Plant. - Rostock : Hinstorff, 1998. - 80 p. : ill ; 32 cm. ISBN: 3-356-00781-5 Subjects--Topical Terms: Geography. Regional study