Clinton J Davisson og Lester H Germer, amerikanske fysikere, ca 1927(Clinton J Davisson and Lester H Germer, American physicists, c 1927)Frederick (attr. to) Barnard | 
                            
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                             € 127.59 
                            
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                                Udateret                                                                 ·  Billed-ID: 1086842
                                   Science Museum, London, UK / Bridgeman Images  | 
                        
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