1. 01. English Non Fiction Quasars and black holes.   Publication: Chicago, IL : World Book, 2010 . 64 p. : , Includes index. 26 cm. Date:2010 Availability: Copies available: (1), Actions:
2. 01. English Non Fiction The little book of black holes / by Gubser, Steven S. Publication: . xv, 179 pages : , Includes index. 23 cm. Availability: Copies available: (1), Actions: