Subject ASC0003j6m
Journal of the Royal Microscopical Society.
ser.2:v.1:pt.2:no.4-6 (1881), Page 939 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31228190
Keywords
lens holder loupe porte-loupe stand magnifier screw Nachet's Porte-loupe magnifying glass