References

Alberta Environment http://environment.gov.ab.ca/default.aspx

Alberta Invasive Plants Council www.invasiveplants.ab.ca

Alberta Native Plant Council www.anpc.ab.ca/content/index.php

Berard, Barb (2005) The Bell Tolls for Thee. Calgary Gardening vol. 12 (7).

Calgary Horticultural Society www.calhort.org/home/default.aspx

City of Calgary www.calgary.ca

Cirsium arvense. tncweeds.ucdavis.edu/esadocs/documnts/cirsarv.pdf

Creeping Thistle. www.defra.gov.uk/environ/weedsact/creepths.pdf

Curtis Group, Peter (2006) Restoration Ecology. Ohio State University. www.biosci.ohio-state.edu/~pcurtis/Rest_ecology_link2.htm

Environment Canada www.ec.gc.ca/envhome.html

Gummo, Karen and Knowlton Cockett, Polly Lee, Editors & Contributors (2002) Dr. E.W. Coffin School: Stories of Community. Dr. E.W. Coffin School, Calgary Board of Education, pp. 162.

Harrison, Mike (2006) Personal Communication. City of Calgary Natural Areas.

IUCN: The World Conservation Union Invasive Species Specialist Group. www.issg.org/index.html

Murphy, Don (phone: 306-445-9083) Smooth Bromegrass Control in the Moist-Mixed Grassland Ecosystem.

National Geographic. Strange Days on Planet Earth: Invaders. www.pbs.org/strangedays/episodes/invaders/

Thistle Control. www.extension.umn.edu/projects/yardandgarden/ygbriefs/h525thistle.html

Thunhorst, G., & Swearingen, J.M. (2005) Canada Thistle. Plant Conservation Alliance. www.nps.gov/plants/alien/fact/ciar1.htm

Travel Alberta www.travelalberta.com/content/albertafacts/

Utah State University (2002) Range Plants of Utah: Smooth Brome. extension.usu.edu/rangeplants/Grasses/smoothbrome.htm

Wild Ones: Native Plants, Natural Landscapes. www.for-wild.org/