Dying alder trees and phytophthora.
Great Britain.Forestry Commission.
Great Britain.Department of the Environment.Directorate of Rural Affairs.
Arboricultural Advisory and Information Service (Great Britain)
Farnham : Arboriculture Advisory and Information Service,
1993.
Caption title.
"Produced by the Forestry Commission under the auspices of the Department of the Environment's Directorate of Rural Affairs and issued by the Arboricultural Advisory and Information Service"