File:EB1911 Crystallography Fig. 72.—Stereographic Projection of a Holosymmetric Rhombohedral Crystal.jpg
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EB1911_Crystallography_Fig._72.—Stereographic_Projection_of_a_Holosymmetric_Rhombohedral_Crystal.jpg (434 × 418 pixels, file size: 43 KB, MIME type: image/jpeg)