Wickelgren, Wayne A. <br/><br/>
How to solve problems  elements of a theory of problems and problem solving 
[by] Wayne A. Wickelgren. 
 - San Francisco  W. H. Freeman  [1974] 
 - xi, 262 p.  illus.  24 cm. 
 - A Series of books in psychology .
<br/><br/> 920306 
<br/><br/>Bibliography: p. [257] 
<br/><br/><label>ISBN: </label>0716708469  0716708450 (pbk.) 
<br/><br/><label>LCCN: </label>73015787  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Problems, exercises, etc.<br/>Problem Solving
<br/><br/><label>LC Class. No.: </label>QA43  / .W52 
<br/><br/><label>Dewey Class. No.: </label>511