Dutch elm disease : proceedings of IUFRO conference, Minneapolis, St. Paul, USA, September 1973
compiled by D.A. Burdekin and H.M. Heybroek
Bok Engelsk 1975 International Union of Forestry Research Organizations
Utgitt | Upper Darby, PA : USDA Forest Service , 1975
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Omfang | 94 s. : ill.
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Emner | almesyke almesplintborere ophiostoma ceratocystis ulmi
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