Six thinking hats /
Bona, Edward De.
Six thinking hats / - USA, Penguin books, c1999. - xiii, 177p. ; ill. ; 18 cm.
978014037554
153.42
Six thinking hats / - USA, Penguin books, c1999. - xiii, 177p. ; ill. ; 18 cm.
978014037554
153.42