U.S. Department of Agriculture1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. Desolation Wilderness: data from 1997-1998 visitor response to fees, fee demonstration project
- Author(s):
- Watson, Alan E.; Puttkammer, Annette; Christensen, Neal A.
3. Mangrove carbon stocks in Zambezi River Delta, Mozambique
- Author(s):
- Trettin, Carl C.; Stringer, Christina E.; Zarnoch, Stanley J.; Tang, Wenwu; Dai, Zhaohua
4. Fuel treatment and previous fire effects on daily fire management costs
- Author(s):
- Barnett, Kevin; Naughton, Helen T.; Parks, Sean A.; Miller, Carol