1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. Urban land, urban tree cover and urban impervious cover by conterminous United States counties from 2010 to 2060
- Author(s):
- Nowak, David J.; Greenfield, Eric J.