Ballard, Philip Boswood,  1865-1950. <br/><br/>
Group tests of intelligence / 
by Philip Boswood Ballard. 
 - London ;  New York  :  Hodder and Stoughton, ltd.,  1922 [Impression 1925]. 
 - x, 252 p. :  illus., tables, diagrs. ;  19 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational tests and measurements.
<br/><br/><label>Dewey Class. No.: </label>371.26   / BAG 1925