Contents: Davison, Brigid Catherine Clare. Familial idiopathic severe subnormality: the question of a contribution by X-linked genes - Swift, Peter Neville. The application of genetic principles to screening for metabolic disorders: the Leybourne Grange survey of mentally subnormal siblings/ by Peter N. Swift, Philip F. Benson, John D. Studdy.
Genetic studies in mental subnormality. ISBN 0900443065. Published by Headley for the Royal College of Psychiatrists in 1973. Publication and catalogue information, links to buy online and reader comments.