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Optika
A fizika egy ága
Kuyavian-Pomeranian Digital Library
Finnish Heritage Agency
Finnish Heritage Agency
Finnish Heritage Agency
Finnish Heritage Agency
National Heritage Institute, Bucharest
Ion Gh. TĂNASE
National Heritage Institute, Bucharest
Dan Mihăilescu; Maria-Luiza FLONTA; Liviu Movileanu
National Heritage Institute, Bucharest
Constantin Danciulescu; Gabriela GUGHEA; Bogdan IORGA
National Heritage Institute, Bucharest
Helsinki City Museum
SUB PRÆSIDIO Viri Clarissimi atq´ Præ-eximii DN. M. JACOBI SCHNITZLERI, AUTOR and RESPONDENS HENRICUS JACOBUS HATTORPIUS Duderstadensis
Brukenthal National Museum
Public Library Pencho Slaveykov, Varna
Public Library Pencho Slaveykov, Varna
Heidelberg University Library
Herzog August Library
Herzog August Library
Herzog August Library
Herzog August Library