"Pennathur, Krish." <br/><br/>
Method study. 2nd ed. 

 - New Delhi  National productivity council.  1967 
 - 321 : ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PERT
<br/><br/><label>Dewey Class. No.: </label>658.4032 PEN