Blench, R.

Chapman, R. et al., 2003. Rural radio in agricultural extension : the example of vernacular radio programmes on soil and water conservation in N. Ghana, (ODI/IIMI Agricultural Research and Extension Network (Agren) / network paper no. 127) London, UK: Overseas Development Institute (ODI). Available at: https://fr.ircwash.org/sites/default/files/Chapman-2003-Rural.pdf.