Stevenson, Frederick W. <br/><br/>
Exploratory problems in mathematics/ 
by Frederick W. Stevenson. 
 - Reston, Va.:  National Council of Teachers of Mathematics,  c1992. 
 - viii, 168 p.:  ill.;  23 cm. 
<br/><br/>Includes bibliographical references (p. 167-168). 
<br/><br/><label>ISBN: </label>0873533380 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics---Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>510.7  / S847e