Theologe und Mathematiker (1691-1770). Autograph quotation signed. Königsberg. 10.12.1736. 1 S. Qu.-8vo.
$ 865 / 800 €
(31787/BN20419)
"Panta dokimazete, to kalon katechete" ("Test everything. Hold on to the good", 1 Thessalonians 5:21). - Christoph Langhansen was professor of mathematics and theology in Königsberg, several times president of the university and author of numerous mathematical and astronomical writings. - With small handwritten numbering in the upper right corner.