Campbell, Russell N. <br/><br/>
Insights into English structure  a programmed course 
by Russell N. Campbell and Judith W. Lindfors. 
 - Englewood Cliffs, N.J.  Prentice-Hall  1969 
 - 180 p.  illus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--1950-<br/>English language--Syntax<br/>English language--Phonology.<br/>English language--Programmed instruction.