Wickelgren Wayne A  1938, <br/><br/>
How to solve problems; elements of a theory of problems, and problem solving. 

 - 262 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solución de problemas<br/>Matemáticas--Problemas, ejercicios, etc.
<br/><br/><label>LC Class. No.: </label>QA43  / W5