Quantum gravity  a second Oxford symposium 
edited by C.J. Isham, R. Penrose, and D.W. Sciama 
 - Oxford  Clarendon Press  1981 
 - 669p. ill. 24cm 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0198519524 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitation--Congresses<br/>Quantum gravity--Congresses