000 00297nam a22001217a 4500
020 _a978014037554
082 _222
_a153.42
100 _aBona, Edward De.
245 _aSix thinking hats /
260 _aUSA,
_bPenguin books,
_cc1999.
300 _axiii, 177p. ;
_bill. ;
_c18 cm.
942 _2ddc
_cGEN
_01
999 _c1947
_d1947