Second assessment of transboundary rivers, lakes and groundwaters

aguas interiores internacionales asia central asie centrale atlantique oriental cours d'eau cursos de agua eau souterraine eaux continentales internationales environmental impact assessment europa europe gestion des eaux groundwater international inland waters lac lagos lakes legislation mar baltico mar barents mar caspio mar de aral mar de kara mar de okhotsk mar del norte mar mediterraneo mar negro mer baltique mer caspienne mer d'aral mer d'okhotsk mer de barents mer de kara mer du japon mer du nord mer noire monitoring rivers surveillance vigilancia water management