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http://www.eddmaps.org/distribution/uscounty.cfm?sub=3965
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http://www.mortonarb.org/trees-plants/tree-plant-descriptions/amur-maple-not-recommended
. Accessed 19 Sept 2016
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https://www.dnr.state.mn.us/invasives/terrestrialplants/woody/amurmaple.html
. Accessed 15 Sep 2016
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