A. A. Burki,
Ecology and pollution in human settlements : Nala Lai, vol. no. 2. Islamabad, Pakistan: LEAD-Pakistan, 2000, p. ii, 24 p.
N. L. Resource A. Delft y Hague, N. L. Coastal Zo,
«Stream delta CD». Resource Analysis, Delft, The Netherlands, p. CD-ROM : 158 MB, 2000.
University of New Hampshire -Durham, NH, US y Global Runoff Data Center -Koblenz, DE, GRDC,
«UNH/GRDC composite runoff fields». University of New Hampshire, Institute for the Study of Earth, Oceans and Space, Durham, NH, USA, p. CD-ROM : 509 MB, 2000.
B. Ministry o Secretariat,
«Water resources in Brazil 1998». Brazil, Ministry of Environment, Water Resources Secretariat, Brasilia, Brazil, p. 44 p., 2000.