TY  - BOOK
AU  - Siemens, Nicolai
AU  - Green, Frank
TI  - Operations research: planning, operating and information systems
AV  - T 57.6 Sie 
PY  - 1973///
CY  - New York
PB  - The Free Press
KW  - RESEARCH COLLABORATION
KW  - OPERATIONS RESEARCH
ER  -