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by Edited by Stephen Hawking , W. Israel
by Hawking, Stephen W.; Penrose, Roger; Sanz, Javier Garcia
by Hawking, Stephen W.; Sagan, Carl
by Hawking, Stephen W.; Hawking, Lucy; Pradilla, Sílvia Pons
by Hawking, Stephen W.; Hawking, Lucy; Ibeas, Juan Manuel
by Alliance for Technology Access; Hawking, Stephen W.
by Hawking, Stephen W.; Harrisonn, Mary; Donald, Peter
by Hawking, Stephen W.
by Hawking, Stephen W.; Mlodinow, Leonard
by Hawking, Lucy; Hawking, Stephen W.; Parsons, Garry