The barefoot book :  economically appropriate services for the rural poor / 
 Economically appropriate services for the rural poor 
edited and introduced by Marilyn Carr 
 - London :  Intermediate Technology Publications,  1989 
 - 97 p. :  23 cm. 
<br/><br/>References : p. 94-97 
<br/><br/><label>ISBN: </label>1853390143