a field study of molds and moulds

http://www.hort.uconn.edu/plants/a/acepla/acepla1.html

http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/cultivars/acer_platanoides-table.html

http://en.wikipedia.org/wiki/Acer_platanoides

http://apps.rhs.org.uk/plantselector/plant?plantid=37

http://invasiveplantsmi.org/mpias/MIPC%20Acer%20platanoides%20summary.pdf

http://en.wikipedia.org/wiki/Plant_senescence

http://chemistry.about.com/library/weekly/aa082602a.htm

http://en.wikipedia.org/wiki/Abscission

http://norwegianjournaloffriluftsliv.com/doc/192010.pdf

http://en.wikipedia.org/wiki/Acer_saccharum - sugar maple often confused with norway maple

http://en.wikipedia.org/wiki/Leaf_mold