TY  - BOOK
AU  - Riggs,James L.
TI  - Production systems: planning, analysis and control 
T2  - The Wiley Series in management and administration
SN  - 0471721859
U1  - 658.56 
PY  - 1970///
CY  - New York
PB  - John Wiley
KW  - Control de la producci�on
ER  -