Flexner, Jean Atherton. <br/><br/>
The work of an industrial hygiene division in a state department of labor ... 

 - Washington,  U.S. Govt. print. off.,  1939. 
 - vii, 24 p.  pl.  23 cm. 
 - U.S. Dept. of labor. Division of labor standards.  Bulletin no. 31 .
 - United States.  Bureau of Labor Standards.  Bulletin ...  no. 31. .
<br/><br/> At head of title: United States Department of labor. Frances Perkins, secretary. Division of labor standards. Verne A. Zimmer, director.  A report based on data dealing with the Industrial hygiene division of the New York (State) Department of labor. cf. Foreword.  "By Jean A. Flexner." - Letter of transmittal. 
<br/><br/><label>LCCN: </label>l  39000111  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor bureaus--United States.<br/>Industrial hygiene--United States.
<br/><br/><label>LC Class. No.: </label>HD7279.U6  / N55