Before revision: Accessed 03.10.2016. also known as "The Convention on Wetlands", an intergovernmental environmental treaty established on 2nd February 1971 in Ramsar, Iran by UNESCO, which , under the auspices of UNESCO.
After revision: Accessed 03.10.2016. also known as "The Convention on Wetlands", an international environmental treaty signed on 2 February 1971 in Ramsar, Iran , under the auspices of UNESCO.