National Research Institute of Astronomy and Geophysics (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "National Research Institute of Astronomy and Geophysics" in German language version.

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astronomicalheritage.net

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A. M. I. Osman: The Egyptain 1.88-m Telescope. In: Transactions of the International Astronomical Union. 2001, S. 179−186, doi:10.1017/S0251107X00000730.

J. Shears, A. A. Shaker: Harold Knox-Shaw and the Helwan Observatory. In: Journal of the British Astronomical Association. Band 125, Nr. 2, 2015, S. 80–93, bibcode:2015JBAA..125...80S.
Capt. H. G. Lyons: Abbassia Observatory, Cairo. In: Monthly Notices of the Royal Astronomical Society. 1904, S. 332–333, bibcode:1904MNRAS..64..332W.
J. H. Reynolds: Description of the 30-inch photographic reflector of the Helwân Observatory photographic reflector. In: Monthly Notices of the Royal Astronomical Society. Band 67, S. 447–451, bibcode:1907MNRAS..67..447R.
H. Knox-Shaw: The Riefler Clock of the Khedivial Observatory. In: Helwan Institute of Astronomy and Geophysics Bulletins. Band 13, 1914, S. 101–110, bibcode:1914HelOB..13..101K.
Y. A. Azzam et al.: Current and future capabilities of the 74-inch telescope of Kottamia astronomical observatory in Egypt. 2014, bibcode:2014arXiv1402.2926A.
H. A. Deebes, W. Heileman: Sun, Sand and Stars. In: African Skies. Band 4, 1999, S. 7, bibcode:1999AfrSk...4....7D.

R. DeC. Ward: Current Notes on Meteorology. In: Science. Band 18, Nr. 450, 1903, S. 217–218, JSTOR:1630170.