Intelligence and cultural environment /

Eitemau Tebyg

• Intelligence and cultural environment /
  gan: Vernon, Philip E.
  Cyhoeddwyd: (1972)
• Intelligence andcultural environment /
  gan: Vernon, Philip E.
• Intelligence : heredity and environment
  gan: Vernon, Philip E
  Cyhoeddwyd: (1979)
• Intelligence, heredity and environment /
  gan: Vernon, Philip Ewart
  Cyhoeddwyd: (1979)
• Intelligence heredity and environment
  gan: Vernon,Philip E
  Cyhoeddwyd: (1979)