Possibility and necessity

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Piaget, Jean 1896-1980
Rannpháirtithe:	Ackermann-Valladao, E.
Formáid:	LEABHAR
Teanga:	Béarla
Foilsithe / Cruthaithe:	Minneapolis University of Minnesota Press c1987.
Ábhair:	Possibility > Psychological aspects. Necessity (Philosophy) Reality in children. Cognition in children.