Penrose, L.S. <br/><br/>
The Biology of Mental Defect 
by L.S. Penrose with a preface by J.B.S. Haldene 
 - London  Sidgwick & Jackson  1972 
 - xx, 416p.: ill., diagr., table 
<br/><br/> Include bibliographical references and index 
<br/><br/><label>ISBN: </label>283352655