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Created 22.9.2014 Memoires
 Updated 11.5.2020
 
 
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| RECORD 1 (05 June 2003)
 
19 pieces from the Germanium Lab. Institute of Physics, Bulgarian Academy of Sciences. 
 
RECORD 2(12 September 2014)
 
Photo 1, Institute of Physics - BAS, 8 December 1959
 Photo 2, Institute of Physics - BAS, 8 December 1959
Photo 3, Petar Nikolov and Metody Vasilev, 1960
Photo 4, Germanium Lab.,  Institute of Physics - BAS, 1960
Photo 5, Graphite safe, Germanium Lab., Institute of Physics - BAS, 1960
Photo 6, Difusion Aparatus for semiconductors, Germanium Lab., Institute of Physics - BAS, 1960
Photo 7, Ge mono-crystals, Germanium Lab., Institute of Physics - BAS, 1960
Photo 8, Difusion Aparatus, Germanium Lab., Institute of Physics - BAS, 1960
Photo 9, Aparatus where semiconductor mono-crystals grew up, Germanium Lab., Institute of Physics - BAS, 1960
Photo 10, Tranzistors produced in Germanium Lab., Institute of Physics - BAS, 1960
 
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| Books 
Å. Spenke, Elektronische Halbleiter, Springer, Berlin, 1965
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