Ballard, Philip Boswood . <br/><br/>
Group Tests of Intelligence /  Textual Documents 
Philip Boswood Ballard. 
 - 2nd ed. / 
 - London :  University of London Press ,  1957. 
 - x, 252p. :  ill. ;  18cm . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label> PB 
<br/><br/><label>Subjects--Index Terms: </label>Education-Psychology Education-Intelligence Test MS-Education 
<br/><br/><label>Dewey Class. No.: </label>371.26  / B 212 G