Biblio

D. D. Mara, Silva, S. A., and de Oliveira, R., Performance of waste stabilization ponds in Northeast Brazil, vol. no. 9. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. ix, 139 p. : fig., tab.

D. D. Mara, Silva, S. A., and de Oliveira, R., “The performance of a series of five deep waste stabilization ponds in Northeast Brazil”, in International conference on waste stabilization ponds, Lisbon, Portugal, 1987 : preprints, 1987, pp. P. 1.57 - 1.60.