2 Ergebnisse für: 973.151
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Amazing piece of metal (speculum) - YouTube
https://www.youtube.com/watch?v=4ESW_NTIhBM
This small disc of metal - made from speculum - is an important part of history. The metal is an alloy of tin and copper with some arsenic thrown in. Discuss...
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Pooyan Azadeh in Television HALLE - YouTube
https://www.youtube.com/watch?v=zP0BwHxj5vg
TELEVSION HALLE: Report about Dr. Pooyan Azadeh on February 2, 2015 Announcer: (English translation) Several days ago, at Halle University’s Institute for Mu...