Campbell, Russell N. <br/><br/>
Insights into English structure :  a programmed course / 
Russell N. Campbell, Judith W. Lindfors. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1969. 
 - 180 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0134675711 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--1950-<br/>English language--Programmed instruction.<br/>English language--Pronunciation.