Studies in spelling 

 -  1961 
 - Scottish council for research in education, publication; 40 .
<br/><br/><label>Standard No.: </label>149,576 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T15:3:P, K1 (PD)