00448cam a2200157 7i4500 0000000927 20150325090000.0 iicp-my 20021204212500.0 000000 00 200212042125 VLOAD 658.403 ACK Ackoff, Russell L. The art of problem solving Russell L. Ackoff.. New York: John Wiley, c1978.. 1900000026 Book Orange Spot