DescriptionZr Crystal bar.JPG English: Pure Zirconium crystal bar Date 8 March 2014, 10:29:46 Source Own work Author Onyxmet.com...
(91883 bytes) {{Information |Beschreibung = reinst Zirkonium 99,97% crystal Bar nach dem Van-Arkel-de-Boer-Verfahren |Quelle = selbst photographiert...
Works of Industry of all Nations, 1851- Official Descriptive and Illustrated Catalogue, Supplementary Volume (IA dli.granth.53590) (page 5 crop).jpg....
