TY  - BOOK
AU  - Vrat, Prem
AU  - Sardana, G.D. Sahay, B.S. 
TI  - Productivity management: A systems approach
U1  - 338.06 VRA  
PY  - 1998///
CY  - New Delhi
PB  - Narosa Publishing House
N1  - Includes bibliographical references and index 
ER  -