Principles and Practice of Informal  Education: Learning  through life. 

 - New York,  Routledge,  2001. 
 - xiv,290p.:Ill.;table.  Index. 
<br/><br/><label>ISBN: </label>0-415-21690-7 
<br/><br/><label>Dewey Class. No.: </label>370.941 PRI