Label
The biology of mental defect, L.S. Penrose ; with a preface by J.B.S. Haldane ; completely rev. with the assistance of J.M. Berg and Helen Lang-Brown
Main title
The biology of mental defect
Responsibility statement
L.S. Penrose ; with a preface by J.B.S. Haldane ; completely rev. with the assistance of J.M. Berg and Helen Lang-Brown