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Protected area - Wikipedia
Explore the World's Protected Areas
Protected areas and land use | IUCN
Protected Areas | U.S. Geological Survey - USGS.gov
Protected Areas Have a Lot of Benefits. Here’s How to Maximize …
Effective protected areas | IUCN
Protected and Conserved Areas | WWF
The performance and potential of protected areas | Nature
Protected areas definition | Biodiversity A-Z