The universal stage (with five axes of rotation) - Emmons, R. C. (Richard Conrad), 1898- (Boulder, Colo. Geological Society of America, 1943)
'A large part of this manuscript has been used by my students during the past several years in the mineral laboratory of the University of Wisconsin.'--Pref.
'References cited': p. 203-204.
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Keywords: Crystallography; Optics, Physical; Petrographic microscope; Universal stage (Optical instrument); Crystal optics