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Date: 2014-04-01 14:25:56Quasar Radio astronomy Space Metallicity Observational astronomy Sloan Digital Sky Survey 3C 273 Astronomy Astrophysics Physical cosmology | Quasars in the SDSS Rich Kron 28 June 2006 START CI-Team: Variable Quasars Research Workshop Yerkes ObservatoryAdd to Reading ListSource URL: classic.sdss.orgDownload Document from Source WebsiteFile Size: 4,00 MBShare Document on Facebook |