Euler, Johann AlbrechtKarsten, Wenceslaus Johann Gustav, adressaat2009-02-052009-02-051762-10-05F 3,Mrg CCCLIVa,Ep.phil.V,l.73http://hdl.handle.net/10062/8504LetterBriefKiriKiri W. J. G. Karsten` ile, Berlin