Qc 380
MRGRRBK
Euler, Leonhard, 1707-1783. - Dioptricaé se«« «ce LI69=71L (Card 2)
microscopiorum tam simplicium, quam compositorum.
1. Lenses. 2. Optical instruments - telescopes. 3. Optical instruments - microscopes. I. Title:
ocm14315188