World of rivers [cartographic material] : a new mapping of every river system /
National Geographic Maps (Firm)
National Geographic Society (U.S.)
Washington, D.C. : National Geographic Society ; Evergreen, CO : National Geographic Maps [distributor],
c2010.
"Supplement to National Geographic, April, 2010."
Includes 1 inset map and text, ; on verso, col. ill., and text.
Rivers
River channels
Groundwater recharge
Water conservation
Water consumption
World maps.