Kartograf.

Niemiecka Republika Demokratyczna. - Gotha ; Leipzig, 1978. Red.

DNB online

Kooperative Bibliotheksverbund Berlin-Brandenburg, 16.05.2019 http://kvk.bibliothek.kit.edu/view-title/index.php?katalog=KOBV_SOLR&url=https%3A%2F%2Fportal.kobv.de%2Fuid.do%3Fplv%3D2%26query%3Dkobvindex_BAB000490439&signature=QLsZQC9LMzvI6AGxzizRphWwu2x-WhmOHbwFclLkJM8&showCoverImg=1