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020 _a0-14-029666-2
041 _aen
082 _a150.195
100 _aBONO, Edward de
_96186
245 0 _aSix Thinking Hats
260 _aLondon
_bPenquin Book Publishing
_c1999
300 _avii, 177p.
650 0 _95871
_aThought and thinking
650 0 _91500
_aProblem Solving
942 _cPR
_2ddc