Child's conception of the world tr by Joan Tomlinson and Andrew Tomilnson. /

Eitemau Tebyg

• Child's conception of number /
  gan: Piaget, Jean
  Cyhoeddwyd: (1941)
• Child's conception of physical causality tr by Majorie Gababain. /
  gan: Piaget, Jean
  Cyhoeddwyd: (1960)
• Child's conception of time /
  gan: Piaget, Jean
  Cyhoeddwyd: (1969)
• Child's conception of movement and speed /
  gan: Piaget, Jean
  Cyhoeddwyd: (1970)
• Child's conception of physical causality:
  gan: Piaget, Jean
  Cyhoeddwyd: (1951)