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| Keywords: Scheiners Helioscope 1.jpg en Manual for building a helioscope de Anleitung zum Bau eines Helioskops http //fermi imss fi it/rd/bdv /bdviewer/bid 000000367767 From Book Rosa Ursina page 105 1630 en en Christoph Scheiner de de Christoph Scheiner Christoph Scheiner PD-old-100 | ||||
