Chapter 13 Trees Date File Type File Size February 8, 2012 Adobe Acrobat Document 36 KB January 11, 2012 Adobe Acrobat Document 36 KB December 14, 2011 Adobe Acrobat Document 39 KB November 9, 2011 Adobe Acrobat Document 38 KB October 12, 2011 Adobe Acrobat Document 16 KB September 14, 2011 Adobe Acrobat Document 52 KB July 13, 2011 Adobe Acrobat Document 51 KB June 8, 2011 Adobe Acrobat Document 39 KB May 11, 2011 Adobe Acrobat Document 40 KB April 13, 2011 Adobe Acrobat Document 995 KB March 9, 2011 Adobe Acrobat Document 44 KB February 9, 2011 Adobe Acrobat Document 991 KB January 12, 2011 Adobe Acrobat Document 986 KB December 8, 2010 Adobe Acrobat Document 86 KB November 10, 2010 Adobe Acrobat Document 90 KB October 13, 2010 Adobe Acrobat Document 44 KB September 8, 2010 Adobe Acrobat Document 37 KB July 14, 2010 Adobe Acrobat Document 30 KB June 9, 2010 Adobe Acrobat Document 32 KB May 12, 2010 Adobe Acrobat Document 35 KB April 14, 2010 Adobe Acrobat Document 44 KB March 10, 2010 Adobe Acrobat Document 34 KB February 10, 2010 Adobe Acrobat Document 30 KB January 13, 2010 Adobe Acrobat Document 31 KB Documents contained on this page require the Adobe Reader to view.  If you do not have the reader, you may obtain it, free of charge, from the Adobe Site.