Ferguson, George A. <br/><br/>
The reliability of mental tests /    
George A. Ferguson. 
 - London :   University of London Press,   1941. 
 - x, 150 p. :    ill., diagrs. ;    23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental tests.--Testing.------<br/>Ability --Testing.------
<br/><br/><label>Dewey Class. No.: </label>153.94