Aczel, Amir D. The Riddle of the Compass: The Invention That Changed the World. New York: Hartcourt, Inc., 2001.

Alder, Ken. The Measure of All Things: The Seven- Year Odyssey and Hidden Error That Transformed the World. New York: The Free Press, 2002.

Blaise, Clark. Time Lord: Sir Sandford Fleming and the Creation of Standard Time. New York: Pantheon Press, 2000.

Calquhoun, Jed. Pacific Northwest’s Least Wanted List: Invasive Weed Identification and Management. Corvallis: Oregon State University Extension Service and State Communications (in-house publication), 2003.

Gorst, Martin. Measuring Eternity: The Search for the Beginning of Time. New York: Broadway Books, 2001.

Hankins, Juley, and Karen Launchbaugh. Rangeland Vegetation Inventory Field Lab Manual. University of Idaho Department of Rangeland Ecology and Management.

Hunken, Jorie. Botany for All Ages: Discovering Nature Through Activities for Children and Adults. Globe Pequot Press, 1993.

Malone, Lyn, Palmer, Anita M., and Voigt, Christine L. Community Geography: GIS in Action Teacher’s Guide. Redlands, CA: ESRI Press, 2003.

Peterson, Roger Tory and Margaret McKenny. A Field Guide to Wildflowers of Northeastern and Northcentral North America. Boston: Houghton Mifflin Company, 1968.

Proctor, John, and Susan Proctor. Color in Plants and Flowers. New York: Everest House, 1978.

Sheley, Roger L., and Janet K. Petroff, eds. Biology and Management of Noxious Rangeland Weeds. Corvallis: Oregon State University Press, 1999.

Spellenberg, Richard. National Audubon Society Field Guide to North American Wildflowers, Western Region. 2nd ed. NewYork: Knopf, 2001.

Whitson, Tom, ed., Larry C. Burrill, Steven A. Dewey, David W. Cudney, B.E. Nelson, Richard D. Lee, and Robert Parker. Weeds of the West. 5th ed., Jackson: Pioneer of Jackson Hole, 1999.

Winchester, Simon. The Map That Changed the World: William Smith and the Birth of Modern Geology. New York: Harper Collins Books, 2001.

Zanelli English, Kim and Laura S. Feaster. Community Geography: GIS in Action. Redlands, CA: ESRI Press, 2003.

Alien Invasion: An Oregon Weed Primer, supplemental material that is part of the curriculum Alien Invasion: Plants on the Move.

Alien Invasion: An Oregon Weed Primer and Alien Invasion: What About Weeds?, supplemental material that is part of the curriculum Alien Invasion: Plants on the Move.

Interpreting Indicators of Rangeland Health, Version 3 (2000); U.S. Department of the Interior, U.S. Department of Agriculture Technical Reference 1734-6.

County weed boards, extension offices, and state and federal agencies can provide information about invasive weed species and weed identification guides.

Forestry Suppliers sells paper for plant collections. http://www.forestry-suppliers.com

Idaho Rangeland Resource Commission, University of Idaho, Moscow, ID 83844-1135.

Local seed companies or co-ops.

For three-dimensional models of weed specimens, contact the Center for Invasive Plant Management, 733 Leon Johnson Hall, MSU Bozeman, P.O. Box 173120, Bozeman, MT 59717-3120; 406-994-6832. cipm@montana.edu, www.weedcenter.org

For a lesson plan about plant classification developed by Professor Jim Wilson, contact Plant Science Instructor, College of Southern Idaho, Ag Science Department, Evergreen Building, P.O. Box 1238, 315 Falls, Twin Falls, ID 83303.

For Weed Seed Library Images, contact Doug Pals, secondary ag instructor from Culdesac, Idaho and Terry Crawford, Department of Agriculture and Extension Education, University of Idaho.

Weed Story, a noxious weed PowerPoint presentation. S.M. Stoller Corporation, 1780 First Street, Idaho, Falls, ID 83401.

Comprehensive, CD-based plant identification system by XID Services, Inc. http://www.xidservices.com

National Botanical Association. http://www.mcintosh.botany.org/bsa/misc/mcintosh

National Plant Database. http://www.plants.usda.gov

Rocky Mountain Research Station, Fire Sciences Laboratory, Fire Effects Information System. http://www.fs.fed.us/database/feis/

12 authors: (Chapman et al., 1999). The Purple Loosestrife Project. Michigan State University (in house publication). http://www.miseagrant.umich.edu/pp

The U.S. Department of Agriculture Natural Resources Conservation Service Web site contains information about assessing an ecological site. http://esis.sc.egov.usda.gov/About.aspx

The U.S. Department of Agriculture Natural Resources Conservation Service Web site contains information about plants, noxious weeds, and invasive weeds. http://plants.usda.gov

The U.S. Department of Agriculture Natural Resources Conservation Service Web site contains information about plants, noxious weeds, and invasive weeds. http://plants.usda.gov

For information about topographic maps and to order maps, see the USGS Web site. http://www.topomaps.usgs.gov/

For access to USGS topographic and digital aerial maps, see the TerraServer USA Web site. http://terraserver-usa.com

Tree of Life Web Project. http://tolweb.org/tree/phylogeny.html

For general information about using a GPS reciever, using a receiver with a map, and additional resources, see the Web sites for various manufacturers. www.garmin.com, www.geocaching.com, www.gypsy.com, www.lowrance.com, www.magellangps.com, www.onstar.com, www.trimble.com