Trager, Edith Crowell. <br/><br/>
The PD's :  pronunciation drills for learners of English / 
by Edith Crowell Trager and Sara Cook Henderson. 
 - Partland, Oregon :  English Language Services,  1956. 
 - 140 p. ;  22 cm. 
<br/><br/> Cover title :- Pronunciation drills for learners of English. 
<br/><br/><label>ISBN: </label>0877890080 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Pronunciation.<br/>English language--Textbooks for foreigners.