Best, Ethel L. <br/><br/>
A study of a change from one shift of 9 hours to two shifts of 6 hours each, 
by Ethel L. Best. 
 - Washington,  U.S. Govt. print. off.,  1934. 
 - v, 14 p.  23 cm. 
 - Bulletin (United States. Women's Bureau)  no. 116 .
<br/><br/> At head of title: U.S. Department of labor. Fransis Perkins, secretary. Woman's bureau. Mary Anderson, director. 
<br/><br/><label>LCCN: </label>l  34000025  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hours of labor.<br/>Women--Employment.<br/>Fatigue.
<br/><br/><label>LC Class. No.: </label>HD6093  / .A35 no. 116