A special thanks to the sources that made this page possible:

Barnes, B.V. and Wagner, W.H. 1981. Michigan Trees: A guide to the trees of
         Michigan and the Great Lakes. The University of Michigan.              

Earle, C.J. 2008. Pinus Strobus. The Gymnosperm Database, available from
         "http://conifers.org/pi/pin/strobus.htm." Accessed 12 Apr 2010.

Hasbrouk, J. and Mirov, N.T. 1976. The Story of the Pines. Indiana University Press.  

Michаel F. "Pinus strobus L.". Encyclopedia of Life, available from
        "http://www.eol.org/pages/1061748". Accessed 10 Apr 2010.

Mirov, N.T. 1967. The Genus Pinus. The Ronald Press Company.  

Moran, M. Study of Northern Virginia Ecology, available from
          "http://www.fcps.edu/islandcreekes/ecology/eastern_white_pine.htm."
          Accessed 13 Apr 2010.

Richardson, D.M. 1998. Ecology and Biogeography of Pinus. Cambridge University
          Press.  

Walker, L.C. 1999. The North American Forests: Geography, ecology, and
         silviculture. CRC Press.


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