Problem Solving/  The school mathematics project 
Stan Dolan, Tim Everton et al.... 
 - Great Britain,  Cambridge University Press ;,  1994. 
 - 106,  diagram, pictures  24cm. 
<br/><br/><label>ISBN: </label>9780521388443 0521388449 
<br/><br/><label>LC Class. No.: </label>QA107  / P94 1994