Sand and soil : earth's building blocks /
Beth Gurney.
- New York : Crabtree Pub. Co., c2005.
- 31 p. : col. ill. ; 29 cm.
- Rocks, minerals, and resources .
Includes index.
The dust bowl -- What is soil? -- Soil information -- Soil layers -- Organisms in soil -- Sand -- Soil distribution -- Farming technology -- Irrigation -- Soil scientists -- Uses of sand & soil -- Erosion -- Protecting the soil.