TY  - BOOK
AU  - De Bono, Edward
AU  - De Bono, Edward
TI  - SIX THINKING HATS
SN  - 9780316178310
AV  - BF441.D287 1992 
U1  - BF441.D287 1992 
PY  - 1992///
PB  - Penguin Life
KW  - Thought and thinking - Problems, exercises, etc.Thought and thinking
ER  -