SandUnknown - 2000
Describes the formation of sand from materials such as coral, rock, or crystals and shows how it can be moved through water, wind, ice, and other erosion agents.
Publisher: Washington : National Geographic Society, c2000
Branch Call Number: J/553/.622/Pra 359401 1
Characteristics: 29 p. : col. ill
Audience: "Ages 4-8"--P.  of jacket