Geologicshe Karte von Helgoland mit Erlauterungen
Geologicshe Karte von Helgoland mit Erlauterungen, 1:4,000 scale, in offprint of Geolgocisches Jahrbuch ser.A,v.62, 1982. Folded colour print, 31.5x53cm together with folded colour section at 1:20,000 scale and explanatory text, 17pp, in German. The usual plain off print cover as a special dust jacket with a colour air photo of Heligoland.Abstracts in English, French and Russian. Library stamp on the dust jacket. One map missing, otherwise in good condition.