Klein, Martin J., <br/><br/>
Paul Ehrenfest/ 
by Martin J. Klein. 
 - Amsterdam:  North-Holland,  1970. 
 - v.    illustrations, facsims., ports ;   23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/>v. 1. The making of a theoretical physicist. 
<br/><br/><label>ISBN: </label>6720401631 
<br/><br/><label>Subjects--Personal Names: </label><br/>Ehrenfest, Paul, 1880--1933