References
- Betts , P. W. 1984 . Incidence of Dutch elm disease in the city of Thunder Bay and surrounding area. B.Sc.F. thesis, Lakehead University, Thunder Bay, Ont.
- Farr , D. F. , Bills , G. F. , Chamuris , G. P. and Rossman , A. Y. 1989 . Fungi on plants and plant products in the United States. St. Paul , Minn. : APS Press .
- Farrar , J. L. 1995 . Trees in Canada. Markham , Ont. : Fitzhenry and Whiteside Ltd. .
- Fowells , H. A. 1965 . Silvics of forest trees of the United States. , USDA Agric. Agric. Handb. No. 271
- Hughes , S. J. 1976 . Sooty moulds. . Mycologia , 68 : 693 – 820 .
- Kowalski , T. and Holdenreider , O. 1996 . Prosthemium asterosporum sp. nov., a coelomycete on twigs of Betula pendula . Mycol. Res. , 100 : 1243 – 1246 .
- Lawrence , H. W. 2006 . City trees: a historical geography from the Renaissance through the nineteenth century. Charlottesville , Va. : University of Virginia Press .
- Plotnik , A. 2000 . The urban tree book. New York. : Three Rivers Press .
- Sinclair , W. A. and Lyon , H. H. 2005 . Diseases of trees and shrubs., , 2nd ed. Ithaca , N.Y. : Cornell University Press .
- Stipes , R. J. and Campana , R. J. 1981 . Compendium of elm diseases. St. Paul , Minn. : The American Phytopathological Society Press .
- Tainter , F. H. and Baker , F. A. 1996 . Principles of forest pathology. New York. : John Wiley & Sons, Inc. .
- Webber , J. F. and Hedger , J. N. 1986 . Comparisons of interactions between Ceratocystis ulmi and elm bark saprobes in vitro, in vivo . Trans. Br. Mycol. Soc. , 86 : 93 – 101 .
- Wilson , J. 2006 . Urban forestry in northern Ontario. . Ont. Arborist , 34 ( 5 ) : 20 – 21 .