Complex numbers:  The school mathematics project/  
Stan Dolan,  Ron Haydock, Lorna Lyons, et..al (main authors) 
 - Cambridge,  Cambridge University Press;  1991. 
 - iv, 124p.:  Ill. diagrams;  24 cm+ 
<br/><br/><label>ISBN: </label>0521426529 9780521426527 
<br/><br/><label>LC Class. No.: </label>QA107  / .C73 1991