228 Agathe). 153 Hilda then gave its name to the Hilda group. E. Weiss, "Nekrolog über Theodor von Oppolzer", Astronomische Nachrichten, 116 (1887), 95-96...
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Nasjonalbiblioteket. Retrieved June 1, 2018. Rune Ottosen (2 February 2015). "Nekrolog: Gunnar Christie Wasberg". Aftenposten. Retrieved June 1, 2018. Anne-Grethe...
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