WDB	Lectiones Opticæ & Geometricæ : In quibus Phænomen?n Opticorum Genuinæ Rationes investigantur, ac exponuntur: Et Generalia Curvarum Linearum Symptomata declarantur / Barrow, Isaac *1630-1677*. - Electronic ed.. - Londini : Scott, 1674 Permalink: http://diglib.hab.de/drucke/nc-9-1/start.htm					Deutsch
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