WDB	Encyclopaediae Mathematicae ... / Pars IV., Svccincta Opticae, Catoptricae Dioptricae Et Perspectivae Delineatio ... Anni MDCCXLV. In Academia Jvlia Carolina Habendis ... / Frobes, Johann Nicolaus *1701-1756*. - [Online-Ausg.]. - Helmstadii : Schnorr, 1745 Permalink: http://diglib.hab.de/drucke/nb-474-4s/start.htm					Deutsch
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