Freundlich, Erwin,  1885- <br/><br/>
The foundations of Einstein's theory of gravitation / 
by Erwin Freundlich 
 - London :  Methuen,  1924 
 - 140 p. ;  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitation<br/>Relativity (Physics)