Whitney, Norman <br/><br/>
Open doors :  student's book 1 / 
Norman Whitney 
 - Oxford :  Oxford University Press,  1994 
 - 118 p. :  col. ill. ;  30 cm. +  1 workbook 
<br/><br/><label>ISBN: </label>0194356000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for second language learners<br/>English language--Textbooks for foreign speakers