1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. Fuel treatment and previous fire effects on daily fire management costs
- Author(s):
- Barnett, Kevin; Naughton, Helen T.; Parks, Sean A.; Miller, Carol
U.S. Department of Agriculture