Torgerson, Warren S. <br/><br/>
Theory and methods of scaling 

 - New York  ; John Wiley And Sons  , 1958 
 - xiii,460p. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Teaching Evaluation
<br/><br/><label>Dewey Class. No.: </label>371.144  / TOR