ramsar convention

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The term ramsar convention occurs in indexes or keywords of following Zvon materials:

Zvon documents: Convention on Wetlands of International Importance especially as Waterfowl Habitat (1971)
areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tide does not exceed six metres

Zvon keyword: ramsar convention