Erickson, Martin J. <br/><br/>
Aha! Solutions / 
Martin Erickson 
 - Washington, D.C. :  Mathematical Association of America,  c2009 
 - xii, 207 p. :  ill. ;  26 cm. 
 - MAA problem books series .
 - MAA problem books series .
<br/><br/>Includes bibliographical references (p. 197-198) and index 
<br/><br/><label>ISBN: </label>9780883858295 0883858290 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving<br/>Mathematics--Problems, exercises, etc.