Best, Ethel L. <br/><br/>
A study of a change from 8 to 6 hours of work, 
by Ethel L. Best ... 
 - Washington,  U.S. Govt. print. off.,  1933. 
 - iv, 14 p.  23 cm. 
 - Bulletin (United States. Women's Bureau)  no. 105 .
<br/><br/> At head of title: United States Department of labor. Frances Perkins, secretary. Women's bureau. Mary Anderson, director. 
<br/><br/><label>LCCN: </label>l  33000070  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hours of labor.<br/>Fatigue.
<br/><br/><label>LC Class. No.: </label>HD6093  / .A35 no. 105