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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Formeln zur genaeherten Stoerungsrechnung in Bahnelementen. Angewandt auf die Planeten 633 Zelima, 956 [1921 IW], 979 Ilsewa, 1035 Amata und 1049 [1925RB]