Age-group and pedagogical psychology / 
edited by A. Petrovsky. 
 - Moscow :  Progress publishers,  c 1973. 
 - 321 p. ;  21 cm. 
<br/><br/> Includes index. 
<br/><br/>330  330 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology.
<br/><br/><label>Dewey Class. No.: </label>370.15 / P449a