00351nam a2200133Ia 4500001001100000005001700011008004300028020001500071050001100086245004700097260001000144500004800154999001500202000002133920251012174640.0        s1970    uk                  eng c  a047142594X00aHD20.510aThe implementation of operations research   c1970   a[by Jan H.B.M. Huysmans xi,234p illus 24cm   c7992d7992