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	1.		Ventilated improved pit latrines : guidelines for the selection o f design options / D. Duncan Mara. by Mara, D. Duncan (David Duncan), 1944- Mara, D. Duncan (David Duncan), 1944- World Bank. Technology Advisory Group Series: Technology Advisory Group working paper ; no. 4. Material type: Text Publication details: Washington, D.C. : Technology Advisory Group, World Bank, c198 5 Availability: Items available for loan: Main Library - Africana (1)Call number: UNDP/IBRD ( 08) 2/4. Place hold Save to lists Add to cart (remove)
	2.		Ventilated improved pit latrines : guidelines for the selection o f design options / D. Duncan Mara. by Mara, D. Duncan (David Duncan), 1944- Mara, D. Duncan (David Duncan), 1944- World Bank. Technology Advisory Group Series: Technology Advisory Group working paper ; no. 4. Material type: Text Publication details: Washington, D.C. : Technology Advisory Group, World Bank, c198 5 Availability: No items available. Save to lists Add to cart (remove)
	3.		Ventilated improved pit latrines : guidelines for the selection o f design options / D. Duncan Mara. by Mara, D. Duncan (David Duncan), 1944- Mara, D. Duncan (David Duncan), 1944- World Bank. Technology Advisory Group Series: Technology Advisory Group working paper ; no. 4. Material type: Text Publication details: Washington, D.C. : Technology Advisory Group, World Bank, c198 5 Availability: No items available. Save to lists Add to cart (remove)
	4.		A model for the development of a self-help water supply programme / Colin Glennie. by Glennie, Colin Series: Technology Advisory Group Working Paper ; no.1 Material type: Text Publication details: New York : The World Bank, 1982 Availability: Items available for loan: Main Library - Africana (1). Place hold Save to lists Add to cart (remove)
	5.		A model for the development of a self-help water supply programme / Colin Glennie. by Glennie, Colin Series: Technology Advisory Group Working Paper ; no.1 Material type: Text Publication details: New York : The World Bank, 1982 Availability: No items available. Save to lists Add to cart (remove)
	6.		A model for the development of a self-help water supply programme / Colin Glennie. by Glennie, Colin Series: Technology Advisory Group Working Paper ; no.1 Material type: Text Publication details: New York : The World Bank, 1982 Availability: No items available. Save to lists Add to cart (remove)