Columbia subject headings:
Harvard subject headings:
Child development--Congresses
Cognition--Congresses
Developmental psychology--Congresses
Educational psychology--Congresses
Learning--Congresses
Piaget, Jean, 1896-1980--Congresses.
Vygotskiĭ, L. S. (Lev Semenovich), 1896-1934--Congresses.
Princeton subject headings:
Developmental psychology.
Educational psychology.
Piaget, Jean, 1896---Criticism and interpretation.
Vygotskiĭ, L. S. (Lev Semenovich), 1896-1934--Criticism and interpretation.