Vernon, Philip Ewart. <br/><br/>
The structure of human abilities / 
[by] Philip Ewart Vernon 
 - London :  Methuen,  1950 
 - 160 p. ;  22 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ability<br/>Factor analysis