TY  - BOOK
AU  - Ackoff,Russell Lincoln
TI  - Progress in operations research. Vol. 1 / 
T2  - Publications in operations research
AV  - Q175 .P89
PY  - 1961///]
CY  - New York
PB  - Wiley
KW  - Operations research
KW  - ოპერაციების კვლევა
ER  -