Ballard, P.B.. <br/><br/>
Mental Tests /  Textual Documents 
P.B.Ballard. 
 - 1st ed. / 
 - London :  Univercity of London Press ,  1955. 
 - 235p. ;  18cm. 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Education-Mental Tests Mental Tests MS-Education G-Education T/G- Education 
<br/><br/><label>Dewey Class. No.: </label>371.26  / B 212 M