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Filters: Keyword is design and Author is Morgan, P.R.  [Clear All Filters]
1985
P. R. Morgan y Mara, D. D., «Ventilated improved pit latrines : Zimbabwean brick design», vol. no. 1. World Bank, Washington, DC, USA, p. iv, 47 p.: fig., tab., 1985.
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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