Duffy, Pat, 1952-. <br/><br/>
Variations :  reading skills oral communication for begining students of ESL / 
Pat Duffy ; illustrated by Daphne Fraser. 
 - Englewood Cliffs, N.J.  Prentice-Hall,  1986. 
 - 229 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0139405038 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Text--books for foreign speakers.