Read this case study on ...
Published by Mandisa Mensah
Read this case study on sustainability of rural sanitation marketing in Vietnam document, this may be helpful http://www.unicef.org/wash/files/Sijbesma_Truong_Devine_2010a.pdf
Published by Mandisa Mensah
Read this case study on sustainability of rural sanitation marketing in Vietnam document, this may be helpful http://www.unicef.org/wash/files/Sijbesma_Truong_Devine_2010a.pdf