Resources
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Resources
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(2002). Harcourt Science. Orlando, Florida: Harcourt School Publishers.
"Ask the Answer Worm." Ask the Answer Worm. National Resources Conservation Service. 27 Mar 2007 <http://www.nrcs.usda.gov/feature/education/squirm/skworm.html >.
Binninger, Jerry. "What on Earth is Soil." What on Earth is Soil. 08 03 2007. U.S. Environmental Protection Agency. 27 Mar 2007 <http://www.epa.gov/gmpo/edresources/soil.html >.
Richardson, Adele D. (2002). Soil. Mankato, MN: Bridgestone Books.
Rosinsky, Natalie M (2003). Dirt The Scoop on Soil. Minneapolis, Minnesota: Picture Window Books.
"Soil Science Education Homepage." Soil Science Education Homepage. April 20, 2005. Soil Science Society of America. 27 Mar 2007 <http://soil.gsfc.nasa.gov/index.html>.
Stewart, Melissa (2004). Down to Earth. Minneapolis, MN: Compass Point Books.
Tomecek, Steve (2002). Dirt. Washington, DC: National Geographic Society.
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