Penrose, Roger.  1931- <br/><br/>
Techniques of differential topology in relativity. 

 - Philadelphia:  SIAM,  1972. 
 - CBMS-NSF Regional conference series in applied mathematics .
 - CBMS-NSF Regional conference series in applied mathematics;  7. .
<br/><br/>Bibliography: p. 72. 
<br/><br/><label>ISBN: </label>9780898710052 
<br/><br/><label>LCCN: </label>73161108 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relativity (Physics)<br/>Differential topology.
<br/><br/><label>Dewey Class. No.: </label>530.1/1