Sachs, Mendel <br/><br/>
General relativity and mather: Spinger field theory from termis to lights-years 

 - Dordrecht  D. Reidel Publishing  1982 
 - xix, 208 p. 
<br/><br/><label>ISBN: </label> FL110 
<br/><br/><label>Dewey Class. No.: </label>530.11 S14G