Subject ASC0003jlz
Journal of the Royal Microscopical Society.
ser.2:v.5:pt.2:no.4-6 (1885), Page 703 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31219814
Keywords
microgoniometer equipment level arc microscope stage double drum mirror lens focus Microscopy instrument Pfaff's Microgoniometer Double-Drum Microscope microscopy Dr. F. Pfaff double drum microscope