Davis, Polly <br/><br/>
English structure in focus 
Polly Davis. 
 - Cambridge , Mass.  Newbury House Publishers  1987- 
 - ix,579 p.  ill. 
<br/><br/><label>ISBN: </label>0883773260 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers.<br/>English language--Programmed instruction.
<br/><br/><label>LC Class. No.: </label>PE1128  / .D35 1987 
<br/><br/><label>Dewey Class. No.: </label>428.2  / D2613