Wildlife Crossings in North America
Transportation Research Board Wildlife and Highways Workshop, Washington D.C.
Cramer, P. C. and J. A. Bissonette. 2006. Wildlife crossings in North America. Invited Presentation to Transportation Research Board Wildlife and Highways Workshop. Washington, D.C. January, 2006. url: http://refugedata.fws.gov/trb/2006Workshop/index.html.
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