Description
51 stereoscopic cyanotypes. C. 1900 "The crystalline forms of stereoscopic mineralogy" / "Die Kristallgestalten der Mineralogie in stereoskopischen" by Professor Theodor Hartwing.
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51 stereoscopic cyanotypes. C. 1900 "The crystalline forms of stereoscopic mineralogy" / "Die Kristallgestalten der Mineralogie in stereoskopischen" by Professor Theodor Hartwing.
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