ISBN-13: 9780393001716 / Angielski / Miękka / 1962 / 308 str.
ISBN-13: 9780393001716 / Angielski / Miękka / 1962 / 308 str.
A study of child development in terms of systematic and representative imitation, the structure and symbolism of games and dreams, and the movement from sensory-motor schemas to conceptual schemas.