Petrovsky A Ed. <br/><br/>
Age-group and pedagogical psychology 

 - Moscow  Progress          1986 
 - 320p.  cm. 
<br/><br/><label>Standard No.: </label>61897 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S1, M6