Harrison, Derek,   1952- <br/><br/>
Science at work : Electronics. /  [Books]. 
Derek Harrison.  
 - England :   Longman group limited.,   1989. 
 - 33p. :   col. ill. ;   27cm. 
<br/><br/><label>ISBN: </label>0582028698 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics.