Schwartz, Diane Prisccoll <br/><br/>
Conjecture and proof:   an introduction to mathematical thinking / 
Diane Prisccoll Schwartz. 
 - Forworth :  Sounders college,  1997. 
 - xvii, 419 pages 
<br/><br/> Includes index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0-03-098338-x