Gardiner, A.  1947- <br/><br/>
Discovering mathematics:  the art of investigation/ 
A. Gardiner. 
 - Oxford:  New York:  Clarendon Press,  Oxford University Press,  c1987. 
 - xiv, 206 p.:  ill.;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0198532652 (U.S. : pbk.) :  $11.50 0198532822 (U.S.) :  $23.00 
<br/><br/><label>LCCN: </label>86012759 //r95 
<br/><br/><label>Nat. Bib. No.: </label>GB86-16935 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving-<br/>Mathematics---Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>510  / G221d 
<br/><br/><label>Universal Decimal Class. No.: </label>51