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- American Farmland Trust
- Calviá, City Council
- Grand Canyon National Park (park management)
- Green Guide series (CRC Sustainable Tourism, Australia)
- Montana Department of Environmental Quality
- Smithsonian Institute (Manassas battlefield restoration)
- TAT (advisories to potential visitors)
- Tourist Board of Venice (tourist card)
- Vieux Carré Commission
- Whistler, Resort Municipality (Canada) Zoning bylaw
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