Notes on the Microscopical Structure of Some Eruptive Rocks from Armenia and the Caucasus

Hjalmar Gylling

Helsingfors

Mineralogical Magazine; July 1887 v. 7; no. 34; p. 155-160; DOI: 10.1180/minmag.1887.007.34.12
© 1887, The Mineralogical Society
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