Friedrich Georg Wilhelm von Struve http://www.klima-luft.de/steinicke/ngcic/persons/struve_w.htm https://creativecommons.org/publicdomain/mark/1.0/PDMCreative
2004-10-19 19:46 Postman Lee 150×150× (21001 bytes) Lage des Mondkraters Struve, PD, Quelle: Nasa English applies to jurisdiction: United States of America