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Gestión de los recursos hídricos y medio ambiente

PHI; Jornadas de Trabajo sobre Gestión de los Recursos Hídricos y Medio Ambiente (2a. : 21-23 Octubre de 1992 : Concepción, Chile) ([s.n.], 1992)

Water : a looming crisis? : proceedings

PHI; Zebidi, H., ed.; International Conference on World Water Resources at the Begining of the 21st Century (3-6 June 1998 : Paris) (UNESCO, 1998)

Transboundary river basin management and sustainable development : proceedings

PHI; Wessel, J. ed.; Van Dam, J. C. ed. (UNESCO, 1993)

International symposium on estuarine water quality management - monitoring, modelling and research : report

Michaelis, W.; PHI ([s.n.], 1990)

Lecture notes of the UnescoNorway fith regional training course for hydrology technicians : Zimbabwe, 1984

PHI; Jones, G. P. ed. (UNESCO, 1988)