Carrothers, George Ezra,  1880-. <br/><br/>
The physical efficiency of teachers:  an analytical study of some factors effecting the health and physical efficiency of public school teachers/ 
by George Ezra Carrothers. 
 - New York:  Columbia University,  1924. 
 - ix, 80 p.  :  illus.  ;  23 cm. 
 - Contributions to education ; no.155. .
<br/><br/> Also published as thesis--Columbia University. 
<br/><br/><label>ISBN: </label>0404551556 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teachers--United States.<br/>Occupational diseases.