Emerson, Harrington,  1853-1931 <br/><br/>
The twelve principles of efficiency / 
by Harrington Emerson 
 - Reprint of the Sixth Edition 
 - xviii, 423 pages ;  20 cm 
<br/><br/><label>ISBN: </label>0415092531 (Hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial efficiency