Abbott, G. W. <br/><br/>
Conditionals 

 - London :   Longmans,   1969. 
 - viii, 64 p. ;   20 cm. 
 - Longmanselements of English Series .
<br/><br/><label>ISBN: </label>582531306 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INGLES-ENSEÑANZA
<br/><br/><label>Universal Decimal Class. No.: </label>821.111:37