Beem, John K. and Ehrlich, Paul E. <br/><br/>
Global lorentzian geometry   

 - New York  Marcel Dekker  1981 
 - vi, 460p. Index 
 - Pure and Applied Mathematics, monographs and textbooks   67 .
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<br/><br/><label>Dewey Class. No.: </label>530.1  / B414.GL