Biblio

I. Nhapi, “Potential for the use of duckweed-based pond systems in Zimbabwe”, Water SA, pp. p. 115-120 : 3 fig., 1tab., 2004.

O. Zimmo, Nitrogen transformations and removal mechanisms in algal and duckweed waste stabilisation ponds. Lisse, The Netherlands: Swets and Zeitlinger, 2003, p. 131 p. : fig., tab.

S. Islam, Alam, M. J., Sadique, M. A., Nair, G. B., Sack, D. A., Rahman, M. A., Kabir, M. S., Khan, S. I., Ekramullah, M., Sack, R. B., Huq, A., and Colwell, R. R., “Faecal contamination of a fish culture farm where hospital wastewater grown duckweeds are used as fish feed”, in Ecosan : closing the loop in wastewater management and sanitation : proceedings of the international symposium, 30-31 October 2000, Bonn, Germany, 2001, pp. P. 289-298 : 4 fig.

H. J. Gijzen and Ikramullah, M., “Pre-feasibility of duckweed based wastewater treatment and resource recovery in Bangladesh : main report”. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. 87 p. + 17 annexes (ca. 80 p.) : 4 boxes, 4 fig., 19 tab., 1999.

H. Nielsen and Ngo, V., “A natural solution for reliable, cost-effective wastewater treatment”, Water and wastewater international, pp. p. 20-21 : 1 fig., 1 photogr., 1995.

W. Journey, Spira, W., and Skillicorn, P., “Duckweed aquaculture : a new aquatic farming system for developing countries”. World Bank, Washington, DC, USA, p. x, 76 p.: 1 box, 25 fig., 2 tab., 1993.

E. Robson, “Duckweed : a lowly plant finds a richer role cleansing waste and creating protein”, Source, pp. p. 22-26: photogr., 1991.

N. L. Royal Hask Nijmegen, Wageningen, N. L. Wageningen, Cali, C. O. Universida, and Cali, C. O. Incol -, “Anaerobic treatment and re-use of domestic wastewater : pilot plant study, Cali, Colombia : final report”. Royal Haskoning, Nijmegen, The Netherlands, p. 2 vol. (ca. 300 p.): fig., tab. + 4 techn. drwgs, 1985.

I. T. F. A. O. - Rome, China: azolla propagation (water ferns) and small-scale biogas technology. Report on an FAO/UNDP study tour to the People's Republic of China, 21 May - 11 June 1978, vol. no. 41. Rome, Italy: Food and Agriculture Organization (FAO), 1979, p. xii, 81 p. : drwnng, photogr., tab.