World's Biomes: Grasslands
Offers an overview of the two main divisions of grasslands: tropical grasslands, called savannas, and temperate grasslands.
www.ucmp.berkeley.edu/glossary/gloss5/biome/grasslan.html
Bright Edges of the World: The Earth's Evolving Drylands
Includes arid, semi-arid, and dry sub-humid areas all over the world also know as plains, grasslands, savannas, steppes, or pampas.
drylands.nasm.edu:1995/drylands.html