| http://www.w3.org/ns/prov#value | - The CD is an extension of an older catalogue by Friedrich Wilhelm August Argelander (1799-1875) in 1863 on the position and brightness of 324,198 stars between +90??? and -2??? declination that were measured over 11 years from Bonn, Germany, made with his assistants Eduard Sch???nfeld (1828-1891) and Aldalbert Kr???ger (1832-1896), which became famous as the Bonner Durchmusterung (Bonn Survey)
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