1. Agriculture Change [Global] {1900-2000} University Of Minnesota Public content 1900. U-Spatial. Global change in agricultural land use from 1900 to 2000.
2. Barren (Uninhabited) Change [Global] {1900-2000} University Of Minnesota Public content 1900. U-Spatial. Global change in uninhabited barren land use from 1900 to 2000.