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Filters: Keyword is insect control and Author is Mara, D.D.  [Clear All Filters]
1984
D. D. Mara, «The design of ventilated improved pit latrines», vol. no. 13. World Bank, Washington, DC, USA, p. iii, 73 p. : fig., ill., tab., 1984.
1982
P. R. Morgan y Mara, D. D., Ventilated improved pit latrines : recent developments in Zimbabwe, vol. no. 3. Washington, DC, USA: World Bank, 1982, p. vi, 41 p.
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