Biblio

D. N. Barton, Raju, K. V., y McNeill, D., «Water valuation and pricing – when are they useful in water management?», vol. no. 3. Norwegian Institute for Water Research, NIVA, Oslo, Norway, p. 7 p. : ill., 2008.

D. McNeill, Lium, T., Boot, M. T., y Gleditsch, M. M., «Proposal for continued Norwegian support to the National Rural Water Supply and Sanitation Programme Zimbabwe : report of the appraisal mission». NORAD, Norwegian Agency for Development Cooperation, Oslo, Norway, p. 44 p. + 8 annexes: tab., fig., 1991.