A practical english grammar programmed workbook.  

 - New York :   Collier Macmillan Internacional,   1968 
 - 152 p. :  ils. ;   25 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inglés--Gramatica
<br/><br/><label>LC Class. No.: </label>PE1112   / P73 1968