Greenberg Leon. <br/><br/>
A Practical Guide to Productivity measurement / 
Leon Greenbag. 
 - ed. 
 - Washington DC :  The Bureau of National Affairs Inc,  1973. 
 - 71  p. ;    cm. 
<br/><br/>Includes bibliographicaln references. 
<br/><br/><label>ISBN: </label>0871791900 :  $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic history and conditions.