Was 49 [microform] : mirror for a hidden Seyfert 1 galaxy : IUE observing program final technical report for NAG 5-2092 / prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator: Jules Halpern
原資料の出版事項: [Washington, DC] ; [Springfield, Va. : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1993]