Ruckle,W.H. <br/><br/>
Geometric games and their Applications 
by Ruckle,W.H. 
 - boston  Pitman Advanced publishing program  1983 
 - 186p. 
<br/><br/><label>ISBN: </label>0-273-08578-6 
<br/><br/><label>Dewey Class. No.: </label>519.3  / RUC/G