× Information on this section of ECOLEX comes from the InforMEA Portal which compiled information from MEA Secretariats with the support of the European Union. The accuracy of the information displayed is the responsibility of the originating data source. In case of discrepancy the information as displayed on the respective MEA website prevails. General principles relating to the establishment of the World Heritage List Tipo de documento Decision Número de referencia VI.A(b).28 Fecha Jun 27, 1977 FuenteUNEP, InforMEA Estado Activo Materia Especies silvestres y ecosistemas Tratado Convención para la Protección del Patrimonio Mundial, Cultural y Natural (Nov 23, 1972) Reunión 1ère session du Comité Página web whc.unesco.org Resumen The definition of “universal” given in paragraph 17 of the working document was found to be incomplete, in that time also was a factor that modified the appreciation of values.