Subject ASC0003jfb
Journal of the Royal Microscopical Society.
ser.2:v.4:pt.1:no.1-3 (1884), Page 288 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31399028
Keywords
microscope microscopy test mesh circle Microscopic Test-Objects Figures spectra grating diffraction spectra