5 public-domain matches

Intelligence Levels

Cover of The Development of Intelligence in Children

The Development of Intelligence in Children

Alfred Binet, Théodore Simon

Cover of The intellectual status of children who are public charges

The intellectual status of children who are public charges

John Langdon Stenquist

Cover of The interrelations of mental abilities

The interrelations of mental abilities

Frederick William Steacy

Cover of Intelligence And Its Five Levels

Intelligence And Its Five Levels

Atef Ayadi

Cover of Human efficiency and levels of intelligence

Human efficiency and levels of intelligence

Henry Herbert Goddard