Biblio

D. D. Mara, Pearson, H. W., Alabaster, G. P., y Mills, S. W., An evaluation of waste stabilization ponds in Kenya, vol. no. 11. Leeds, UK: University of Leeds, Department of Civil Engineering, 1997, p. x, 109 p. : fig., tab.

D. D. Mara, da Costa, S. M. Vaz, y Bastos, R. K. X., Bacteriological aspects of wastewater irrigation, vol. no. 8. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. xiii, 118 p. : fig., tab.

D. D. Mara, Pearson, H. W., Silva, S. A., de Oliveira, R., Oragui, J. I., y Cawley, L. R., Wastewater storage and treatment reservoirs in Northeast Brazil, vol. no. 12. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. viii, 34 p. : 7 fig., 21 tab.

B. Ryan y Mara, D. D., La ventilation des latrines a fosse : methodologie d'enquete sur le terrain, vol. no. 4. Washington, DC, USA: World Bank, Technology Advisory Group, 1986, p. v, 17 p. : tab., photogr.

B. A. Ryan y Mara, D. D., «Pit latrine ventilation : field investigation methodology», vol. no. 4. World Bank, Washington, DC, USA, p. i, 16 p., 1983.