by Tom F. W. Barth
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Feldspars, by Thomas Frederick Weiby Bar...
Geologisk museum ved Universitetet i Osl...
Island
The nikeliferous Iveland-Evje amphibolit...
Theoretical petrology
Volcanic geology, hot springs and geyser...
Feldspar minerals
Stereograms for the determination of pla...
Zircon
The determination of the feldspars in th...
A study of optimal twin boundaries
The feldspars