Mackail, A. W. <br/><br/>
Ordinary grade questions and worked examples in chemistry / 
A.W. Mackaill. 
 - 3rd ed. 
 - London :  Heinemann Educational Books,  1971. 
 - 118 p. :  ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>0435645633 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry--Examinations, questions, etc.