WDB	Johannis de sacro busto spericum opusculum vnacum vtilissimis figuris textu[m] declara[n]tibus / de Sacrobosco, Johannes *1195-1256*. - Electronic ed.. - Liptz : Kacheloven, [ca. 1489] Permalink: http://diglib.hab.de/inkunabeln/125-21-quod-9/start.htm					Deutsch
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