Ingalls, John D. <br/><br/>
A trainers guide to andragogy : its concepts, experience and application 

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 - Whashington, DC  Department of Health, Education and Welfare  1973 
 - 241 p.   
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<br/><br/> Revised edition 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRABAJADORES SOCIALES; EDUCACION DE ADULTOS; ADULTOS