JB-AK_Hist-2003.pdf https://astronomische-gesellschaft.de/de/aktivitaeten/publ/jb/inst/ak-hist/JB-AK_Hist-2003.pdf/view https://astronomische-gesellschaft.de/logo.png JB-AK_Hist-2003.pdf JB-AK_Hist-2003.pdf — 86.9 KB