Wallis, G.
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Common tree diseases of British Columbia
Allen, E.A.; Morrison, D.J.; Wallis, G.
Year: 1996
Catalog ID: 4633
Issued by: Pacific Forestry Centre
CFS Availability: PDF (download)
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Common names for tree diseases in the western United States and western Canada
Hawksworth, F.G.; Gilbertson, R.L.; Wallis, G.
Year: 1984
Catalog ID: 2508
Issued by: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).