Watt, Ian D, et al. <br/><br/>
Mathematics for schools: Algibra, Book 5. / 
Watt, Ian D, et al. 
 -  W Foulsham & Co. Ltd., London,  1969 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510 MAT