Charles, Randall. <br/><br/>
Teaching problem solving  what, why & how 
Randall Charles, Frank Lester. 
 - Palo Alto, California  Dale Seymour Publications  1982. 
 - 60 p.  ill.  23 cm. 
<br/><br/>Bibliography: p. 59-60. 
<br/><br/><label>ISBN: </label>0866510826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem Solving