Harrison, Colin James Oliver. <br/><br/>
Readability in the classroom 
Colin Harrison 
 - Cambridge [Eng.]  Cambridge University Press  1980 
 - viii, 189 p.  22 cm 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reading comprehension<br/>Textbooks--Readability
<br/><br/><label>Dewey Class. No.: </label>371.3  / 2