Da Silva, Zenia Sacks. <br/><br/>
A concept approach to Spanish / 
Zenia Sacks Da Silva. 
 - 4th ed. 
 - New York :  Harper & Row,  c1987. 
 - xviii, 494 p. :  ill. ;  25 cm. 
<br/><br/> English and Spanish.  Includes index. 
<br/><br/><label>ISBN: </label>0060415282 
<br/><br/><label>LCCN: </label>86026927 //r932 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spanish language--English.--Textbooks for foreign speakers<br/>Spanish language--Grammar.
<br/><br/><label>LC Class. No.: </label>PC 4129 .E5  / D254 1987