		Historia del tiempo. Del big bang a los agujeros negros. by W. Hawking, Stephen Publication: Madrid :Alianza Editorial 1990 Physical description: 269 p. ;18.cm Availability: Items available for loan: IES Fernando Esquío (1),
		La clave secreta del universo / Lucy & Stephen Hawking by Hawking, Lucy Publication: Barcelona :Montena 2008 Physical description: 220 p ;21cm Academic level: SCB Availability: Items available for loan: IES Fernando Esquío (1),

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