00678nam0-22002531i-450-990002616640403321000261664FED01000261664(Aleph)000261664FED0100026166420000920d1978----km-y0itay50------baENG<<The >>art of problem solvingdi ACKOFF Russ ellNew YorkWiley1978Ackoff,Russell Lincoln<1919-2009>2990ITUNINARICAUNIMARCBK9900026166404033211-4-84-TI5075ECAECAArt of problem solving433743UNINAING01