TY  - BOOK
AU  - Ackoff R L
TI  - Progress in operations research
U1  - 007 
PY  - 1961///
CY  - London
PB  - John Wiley
KW  - Operations research
N1  - V.2; ed. by Hertz D B & Eddison R T,1964 V.3; ed. by Aronofsky J S,1969
ER  -