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Commonwealth cooperation in research and development : [paper] eleventh Commonwealth forestry conference, 1980 / M.E.D. Poore and P.J. Wood.
- University of Oxford. Dept. of forestry,
- 1980.
- Oxford :
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Control of disease caused by biotic agencies in the forest : [paper] eleventh Commonwealth forestry conference, Trinidad, Sept. 1980 / I.A.S. Gibson.
- University of Oxford. Dept. of forestry,
- 1980.
- Oxford :