01004pam a2200277 a 4500 4360722 OSt 20220304093752.0 900927s1991 nyua b 001 0 eng 90019443 0306436426 DLC HU DLC T57.6 .K448 1991 620/.001/1KEY 1991 20 Keys, Paul, 1954- 31997 Operational research and systems : the systemic nature of operational research / Paul Keys. New York : Plenum Press, c1991. xiii, 267 p. : ill. ; 24 cm. Contemporary systems thinking 31998 Includes bibliographical references (p. 253-264) and index. Operations research. 31999 System analysis. 3705 7 cbc orignew 1 ocip 19 y-gencatlg ddc BOOKS 0 32078 32078 0 0 ddc 0 0 REF 004 004 GEN 2022-03-04 0 620/.001/1KEY 1991 WGCFNRL00012399 2022-03-04 00:00:00 1 2022-03-04 BOOKS 0 0 ddc 0 0 REF 004 004 GEN 2022-03-04 0 620/.001/1KEY 1991 WGCFNRL00012400 2022-03-04 00:00:00 2 2022-03-04 BOOKS 0 0 ddc 0 0 REF 004 004 GEN 2022-03-08 0 620/.001/1KEY 1991 Edit WGCFNRL00012597 2022-03-08 00:00:00 3 2022-03-08 BOOKS 0 0 ddc 0 0 REF 004 004 GEN 2022-03-08 0 620/.001/1KEY 199 WGCFNRL00012598 2022-03-08 00:00:00 4 2022-03-08 BOOKS