Beem, John K. <br/><br/>
Global Lorentzian Geometry 
/ by John K. Beem & Paul E. Ehrlich 
 - New York  Marcel Dekker  1981 
 - 460p. 
<br/><br/><label>ISBN: </label>0824713699 
<br/><br/><label>Dewey Class. No.: </label>516.36  / BEE/G