Husid, Marion.
Bergdorf's Hamburger Sternwarte [article] / Marion Husid. - 1994.
Hamburger Sternwarte--History.
Astronomical observatories--History.--Germany--Bergdorf
Zeiss historica. - Vol.16, no.2 (Autumn), p.14-17.
Bergdorf's Hamburger Sternwarte [article] / Marion Husid. - 1994.
Hamburger Sternwarte--History.
Astronomical observatories--History.--Germany--Bergdorf
Zeiss historica. - Vol.16, no.2 (Autumn), p.14-17.
