0123997 - ASU-R 970039 RIV DE eng M - Část monografie knihy
Kopecký, Miloslav - Schroder, W. (ed.)
90 years since the first astronomical observation at the Ondřejov observatory.
BremenRönebeck: History Commission DGG, 1997. In: Physics and geophysics with historical case studies., s. 221-223
Trvalý link: http://hdl.handle.net/11104/0022261