An Analysis of the Movements of Shadow-Edges on the Refractometer in the Case of Biaxial Gemstones

E. J. Burbage and B. W. Anderson

Mineralogical Magazine; September 1942 v. 26; no. 178; p. 246-253; DOI: 10.1180/minmag.1942.026.178.02
© 1942, The Mineralogical Society
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