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Report a problem related to object: Joannis Keppleri Sac. Cas. Majest. Mathematici De stella nova in pede Serpentarii, et qui sub eius exortum de novo iniit, Trigono igneo Accesserunt I De stella incognita Cygni: Narratio Astronomica. II De Jesu Christi Servatoris vero anno natalitio. Consideratio novissimae sententiae Laurentii Suslygae Polonii, quatour annos in usitatae Epocha desiderantis. T.1