The Mystery of the Disappearing Elk and the Purple Flowers
Resources:
- http://www.fws.gov/invasives/volunteersTrainingModule/invasives/whatabout.html
- http://fcwp.org/GYCC/WeedPages/Spottedknapweed.htm
- http://www.co.whatcom.wa.us/publicworks/pdf/weeds/spotted_knapweed2.pdf
- http://www.mda.state.mn.us/plants/badplants/knapweed.htm
- http://www.mtweed.org/weed_SpottedKnapweed.html
- http://www.co.lincoln.wa.us/weedboard/biocontrol/bioknapweed.pdf
- http://www.dnr.state.wi.us/org/caer/ce/eek/earth/aliens.htm
- http://www.mda.state.mn.us/plants/badplants/leafyspurge.htm
- http://www.fsu.edu/~imsp/silent_invaders/new_weeds/main_html/