TY  - BOOK
AU  - Riggs James L.
TI  - Production systems :  Planning, analysis and contro   
T2  - Management and Administration
U1  - X:89A, L0;L6 
PY  - 1976///
CY  - New York
PB  - John Wiley U. S. A.     
KW  - Production Management
ER  -