VERNON, H.M. <br/><br/>
Industrial fatigue & efficiency 
VERNON, H.M. 
 - London  George  1921 
 - viii,246 pages 
<br/><br/><br/>In English 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EFFICIENCY-INDUSTRIAL
<br/><br/><label>Dewey Class. No.: </label>EEIII,64  1921