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XX. Physikalisches, 

 (Vacat.) 



XXL Bibliographisches. 



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Ausgegeben: 25. Octobei' 1904. 



Commissions -Verlag: E. J. Brill in Leiden (Holland). 

 Druck von Gebrüder Gotthelft, Kgl. Hofbuchdrucker in Cassel- 



