19 http://web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTOGMC/EXTGGFR/ 0,,menuPK:578075~pagePK:64168427~piPK:64168435~theSitePK:578069,00.html.
19 http://web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTOGMC/EXTGGFR/0,,menuPK: 578075～pagePK:64168427～piPK:64168435～theSitePK:578069,00.html.