Conference on marcel grossmann meeting on general relativity (Trieste,1975) <br/><br/>
Marcel Grossmann Meeting on General Relativity   
ed. by Remo Ruffini 
 - Amsterdam  North-Holland Publishing Company  1977 
 - xv, 671p. 
<br/><br/><label>ISBN: </label>0720407079 
<br/><br/><label>Dewey Class. No.: </label>530.11  / N772