Petrovsky, A. (Editor) <br/><br/>
Age-group and pedagogical psychology 

 - Moscow  Progress Publishers  1984 
 - 320p. 
<br/><br/><label>ISBN: </label> RS 80.00 
<br/><br/><label>Source: </label> RS 80.00 
<br/><br/><label>Dewey Class. No.: </label>150 AGE