Bergmann, Peter G. <br/><br/>
The riddle of gravitation 

 - New York  Charles Scribner's Sons  1968 
 - xvi, 270 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530.11  / BER