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Fotothek df tg Astronomie Himmelskrper Vermessung Planet Entfernung. Creator Tycho Brahe Scan Deutsche Fotothek dftg color MIKCenter Berlin GmbH Abbildung Frankfurt Main Uranienborg Prag Berechnung des Abstands von Himmelskrpern Papier Holzschnitt cm Astronomie Himmelskrper Vermessung Planet Entfernung ppn Druck Deutsche