PIAGETIAN theory and its implications for the helping professions 
/edited by Marie K.Poulsen., Gerald I. Lubin 
 - California  USE Book Store  1979 
 - 443 p. 
<br/><br/><label>ISBN: </label>87502 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>150  / PIA