Held, A <br/><br/>
General relativity and Gravitation: One hundred years after the birth of Albert Einstein. 

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 - New York  Plenum Press  1980 
 - V.1.   
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<br/><br/><label>Subjects--Index Terms: </label>Relativity theory  Relativity principle 
<br/><br/><label>Dewey Class. No.: </label>530.12