Subject ASC0003jn6
Journal of the Royal Microscopical Society.
ser.2:v.5:pt.2:no.4-6 (1885), Page 855 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31219980
Keywords
microscopy Deby's Twin Microscope selecting mounting R. & J. Beck twin microscope microscope two mirrors Deby's Twin Microscope R & J Beck