00782cam a2200253 i 45000010005000000030008000050050017000130080041000300200015000710350019000860400034001050410008001390820022001471000036001692450083002052500011002882600060002993000033003595000028003925040041004206500025004617000016004867000026005028465BD-RjUL20211208234607.0140118s1977    enka     b    001 0 eng d  a0470991453  a(BD-RjUL)8510)  aDLCcDLCdDLCd(BD-RjUL)beng  aeng00a658.4034bDUG2231 aDuckworth, W. E.q(Walter Eric)12aA guide to operational research /cW. E. Duckworth, A. E. Gear, A. G. Lockett.  a3d ed.  aLondon :bChapman and Hall ;aNew York :bWiley,c1977.  aix, 205 p. :bill. ;c25 cm.  a"A Halsted Press book."  aIncludes bibliographies and indexes. 0aOperations research.1 aGear, A. E.1 aLockett, A. Geoffrey,