1. Research map showing vulnerability of Wisconsin landtype associations to increased flood flows
- Author(s):
- Higgins, Dale A.; Donner, Deahn M.; Fowler, Jessica R.
2. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
U.S. Department of Agriculture