Multiwavelength observations of unidentified high energy gamma-ray sources [microform] : combined annual status report & final technical report for NAG 5-2051 / prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator: Jules P. Halpern
原資料の出版事項: [Washington, DC ; Springfield, Va. : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1993]