00579nam a22001930 4500 PILC 20150820150322.0 970225s1969 eng BF 441 .D4 1969 De Bono, Edward, 1933- The 5-day course in thinking / Edward de Bono. Harmondsworth : Penguin Books, 1969. 160 pages : illustrations ; 20 cm. Pelican books. Creative thinking. Problem solving. The five-day course in thinking. lcc BK FOR 288423 288423 0 0 lcc 0 A A NULL 2015-08-20 DONATION 0 BF 441 .D4 1969 C19714 2018-05-15 00:00:00 2015-08-20 BK