Ongley, P. A. <br/><br/>
Chemistry / 
P. A. Ongley. 
 - London :  Longman,  1975. 
 - 108 p. :  ill. 
 - Technical English supplementary Readers .
<br/><br/><label>ISBN: </label>0582525853 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Technical English.<br/>Chemistry.