University of Guelph. Arboretum

http://www.worldcat.org/oclc/625908687

http://www.worldcat.org/oclc/626547732

http://www.worldcat.org/oclc/626972184

http://viaf.org/viaf/123098855

http://www.worldcat.org/oclc/626202950

http://www.worldcat.org/oclc/627368910

http://www.worldcat.org/oclc/626733426

http://www.worldcat.org/oclc/627368914

http://www.worldcat.org/oclc/626399777

http://www.worldcat.org/oclc/626725202

http://www.worldcat.org/oclc/626160657

http://www.worldcat.org/oclc/627025078

http://www.worldcat.org/oclc/625433662

http://www.worldcat.org/oclc/628750001

http://www.worldcat.org/oclc/625825799

http://www.worldcat.org/oclc/626733406

http://www.worldcat.org/oclc/628759999

http://www.worldcat.org/oclc/627368904

http://www.worldcat.org/oclc/629721525

http://www.worldcat.org/oclc/626315797

http://www.worldcat.org/oclc/626843758

http://www.worldcat.org/oclc/627276789

http://www.worldcat.org/oclc/625590399