Ramsar sites overview : a synopsis of the world's wetlands of international importance

1999
Frazier, Scott |
This new edition reveals a global network of over 30,000 protected areas designated under national legislation which covers 13.2 million square kilometres of land, freshwater and sea, an area larger than Canada, and accounts for nearly 8 per cent of the world's land area, as well as 1.5 million square kilometres of sea.