Al-Khalili, Jim <br/><br/>
Black holes, wormholes, and time machines 
Jim Al-Khalili 
 - 2nd ed. 
 - Boca Raton  CRC Press  2012 
 - xxii, 184p. 
<br/><br/><label>ISBN: </label>978-1-4398-8559-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Black holes<br/>Space<br/>The Universe<br/>Time
<br/><br/><label>Universal Decimal Class. No.: </label>524.882  / ALK