Al-Khalili, Jim <br/><br/>
Black holes, worm holes and time machines 
Jim Al-Khalili 
 - Bristol  IOP Publishing  2000 
 - xxiii, 265p. 
<br/><br/><label>ISBN: </label>0-7503-0560-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Black holes<br/>Space<br/>Time machines<br/>Worm holes
<br/><br/><label>Universal Decimal Class. No.: </label>524.882  / AL