Forestry and the environment = Coedwigaeth a'r amgylchfed [report of the Prince of Wales' Committee Environmental Research Group Joint Seminar with the Department of Forestry and Wood Science, University College of North Wales, Gregynog Hall, Powys 3-5 November 1978]
Prince of Wales' Committee.Environmental Research Group.
University College of North Wales.Department of Forestry and Wood Science.
Cardiff Prince of Wales Committee
[1978?]