22 See Susmita Dasgupta, Paul Martin and Hussain A. Samad, “Addressing household air pollution. Acase study in rural Madagascar”, Policy Research Working Paper No. 6627 (Washington, D.C.,World Bank, 2013).
22 See Susmita Dasgupta, Paul Martin and Hussain A. Samad, “Addressing household air pollution. A case study in rural Madagascar”, Policy Research Working Paper No. 6627 (Washington, D.C., World Bank, 2013).