Subject ASC0003j4u
Journal of the Royal Microscopical Society.
ser.2:v.1:pt.1:no.1-3 (1881), Page 35 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31227754
Keywords
diagram to illustrate text on microscope optics microscopy aperture light angles oblique beam direct beam diagram ray path in microscopic objective wide-angle