TY  - BOOK
AU  - Rivett, Patrick
AU  - 
TI  - Concepts of operational research
U1  - 519.8 
PY  - 1968///
CY  - London
PB  - C A Watts
KW  - Operational research
KW  - Mathematical sciences
KW  - Mathematics
KW  - Number theory
KW  - Set theory
KW  - Group theory
ER  -