00313nam a2200121 a 4500008004100000020001500041050001500056100001600071245002500087260004800112300002200160350000900182120416s1987    ||||||||||||||||| ||    u  a0713136634  aT 57.6 Coh  aCohen, S. S10aOperational research  aLondonbEnglish Language Book Societyc1987  avii, 245p. : ill.  a0.00