Belth, Marc <br/><br/>
The process of thinking / 
Marc Belth. 
 - New York :  D. McKay,  1977. 
 - 234 p. 
 - Educational policy, planning and theory .
<br/><br/><label>ISBN: </label>0679303278 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Pensamiento<br/>PERCEPCION