1. Horizon scanning data for the future of outdoor recreation on public lands
- Author(s):
- Westphal, Lynne M.; Sachdeva, Sonya S.; Fisher, Cherie L.
2. Baltimore Ecosystem Study: Estimates of population in focal watersheds based on 2010 census
- Author(s):
- Fork, Megan L.; Locke, Dexter H.
3. National river recreation study data: a nationwide survey of river recreation use from 1977-1984
- Author(s):
- Cole, David N.