TY  - BOOK
AU  - Levin Richard I. et al
TI  - Production, operations management :  Contemporary p   
T2  - McGraw Hill series in Management
U1  - X:89A, L2 
PY  - 1972///
CY  - New York
PB  - McGraw Hill U. S. A.     
KW  - Production Management
ER  -