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Atlas der Krystallformen (Tafeln) (1913)
Goldschmidt, Victor, 1853-1933 · Heidelberg : Winter · leaf 28
Tafel 20 Band 1 Amphibol (Monoklin) Fig. 161 Fig. 162. Fig. 163. Arfvedsonit Fig. 168. Pargasit Fig. 169. Fig. 170.Mineralogy · Crystallography
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
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