IE-IL (intensive program in English as an international language) :  level 1, structure / 
managed by Opinion Group 
 - Bangkok :  Opinion Group,  [2004] 
 - 83 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENGLISH LANGUAGE--GRAMMAR<br/>ENGLISH LANGUAGE--GRAMMAR--PROBLEMS, EXERCISES, ETC.
<br/><br/><label>LC Class. No.: </label>PE1112  / I573