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G. Kerr ; C. Harper | Farnham, GBR : Forestry Commission - Arboricultural advisory and information service | Arboriculture research and information note, n° 126-94-ARB | 1994Specifications for planting stock quality are described in British Standard 3936. This relies on minimum height:stem diameter ratios of bare-rooted stock including a general description of desirable root sysytems and the external condition of a [...]
