Al-Khalili Jim Black holes, wormholes and time machines - Bristol Institute of Physics Publishing 1999 - xxii,265p Bibliography 254-258p; Index 259-265p ISBN: 0750305606 (pbk) Standard No.: 6509 Source: Shankar, Textual Subjects--Topical Terms: Black holes StarsAstronomy Dewey Class. No.: B965, N9