TY - GEN A1 - Humboldt, Alexander von (1769-1859) A2 - Berghaus, Heinrich Karl Wilhelm (1797-1884) L1 - http://www.jbc.bj.uj.edu.pl/Content/339500/PDF/NDIGORP015158_082_02852337.pdf L2 - http://www.jbc.bj.uj.edu.pl/Content/339500 KW - rękopisy T1 - Brief von Alexander von Humboldt an Heinrich Karl Wilhelm Berghaus UR - http://www.jbc.bj.uj.edu.pl/dlibra/publication/edition/339500 ER -