"søskende" . . "intelligens" . . "Intelligence Psychologie." . . . . "Frères et sœurs." . . "Hérédité" . . "Hérédité." . . . . . . "The Resemblance of siblings in intelligence and achievement, by Gertrude Howell Hildreth" . . . . . . . . . . . . . . . "The resemblance of siblinga in intelligence and achievement" . . "The resemblance of siblings in intelligence and achievement"@en . "The resemblance of siblings in intelligence and achievement" . . . . . . . . . . "The Resemblance of Siblings in Intelligence and Achievement" . . . . . . . "The Resemblance of Siblings in Intelligence and Achievement, etc"@en . . . . . . "The ressemblance of siblings in intelligence and achievement" . . . "Brothers and sisters." . . "undersøgelse" . . "Heredity." . . "Hérédité et milieu Psychologie." . . "Aptitude Tests." . . "Intelligence Tests." . . "Intelligence tests." .