Piagetian Research : Compilation and Commentary 

 - New Jersey :  NFER,   1976. 
 - 331p.;  24cm 
<br/><br/><label>ISBN: </label>0856331031 
<br/><br/><label>Subjects--Topical Terms: </label><br/>E.L Wijemanna Collection<br/>Differential and developmental psychology
<br/><br/><label>Dewey Class. No.: </label>155  / MOD