1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. Wildlife population and harvest data for Forest Service 2010 RPA assessment
- Author(s):
- Flather, Curtis H.; Knowles, Michael S.; Jones, Martin F.; Schilli, Carol J.