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Leaf Project for 4th grade 2009  http://www.fw.vt.edu/dendro/forsite/key/intro.htmmedia type="file" key="Deciduous_Trees_and_Their_Leaves_in_Autumn.asf" width="300" height="300"

http://cas.psu.edu/docs/CASDEPT/Hort/LeafID/

http://upload.wikimedia.org/wikipedia/commons/5/51/Leaf_morphology_no_title.png

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