The ventilated improved double pit latrine a construction manual for Botswana - Van Nostrand, John Cornelius 1949-; Wilson, J. G. (James Gow). (Washington, D.C. The World Bank, 1983)
"A joint contribution of the Government of Botswana, the United Nations Development Programme and the World Bank to the International Drinking Water Supply and Sanitation Decade."
Keywords: Outhouses -- Design and construction; Toilets -- Design and construction; Sewage disposal