Heyking, Heinrich Karl Hermann Benjamin von2012-10-182012-10-1817859789949313471R Est.A-13704 (konvoluut)http://hdl.handle.net/10062/27625fraCC0 1.0 UniversalopenAccesshttp://creativecommons.org/publicdomain/zero/1.0/KuramaaEstonica koguSur le droit de legation des ducs de CourlandeBook