Subject ASC0003k20
Journal of the Royal Microscopical Society.
1888:pt.2:no.4-6 (1888), Page 1031 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31221526
Keywords
wire cone spring camera focus micrometer microscope screw cord pulley microscopy photomicrographic camera Griffith focusing arrangement Jeserich