International hydrological decade. Co-ordinating council, seventh session, paris, 22-26 november 1971 final report.

UNESCO2015-07-152015-07-15https://bibliotecadigital.ciren.cl/handle/20.500.13082/23552esHidrologíaOrganismos internacionalesConferenciasInternational hydrological decade. Co-ordinating council, seventh session, paris, 22-26 november 1971 final report.Libro1083