TY  - BOOK
AU  - Vollmann,Thomas E.
TI  - Operations management :  : a systems model- building approach
AV  - FCM T56.V63 
PY  - 1973///
CY  - Reading, Massachusetts
PB  -  : Addison-Wesley Publishing Company
KW  - Industrial engineering
KW  - Production management
N1  - Includes bibliographical references
ER  -