Campbell, Russell N. <br/><br/>
Letters from Roger / 
Russell N. Campbell, Maryruth Bracy 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1972 
 - xi, 140 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0135319218 
<br/><br/><label>LCCN: </label>71-163394 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers<br/>English language--Composition and exercises