Gardiner, A. <br/><br/>
Discovering mathematics :  the art of investigation / 
A. Gardiner. 
 - Oxford [Oxfordshire] :  Clarendon Press,  c1987. 
 - xiv, 206 p. :  ill. 
<br/><br/><label>ISBN: </label>0198532652 (U.S. : pbk.) :  $11.50 0198532822 (U.S.) :  $23.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving.<br/>Mathematics--Problems, exercises, etc.
<br/><br/><label>LC Class. No.: </label>QA63  / .G37 1987 
<br/><br/><label>Dewey Class. No.: </label>510�19