Description
Engel,E. u. K.Schellbach. 21 copper plates on descriptive optics. Halle, Schmidt 1856. fol. with 21 folio-sized copper plates. Dplblgr. title. Central hardcover (rubbed and worn). Cf. Poggendorff II, 783 (on Schellbach). - Without the text volume. - Somewhat spotty, n.d.
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