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  1. By: Canada. Department of Agriculture. Forest Biology Division. - Canada. Department of Forestry. Forest Entomology and Pathology Branch. - Canada. Department of Forestry.
    Publication info: Ottawa, Canada, Dept. of Agriculture, Science Service, Division of Forest Biology, 1951-1966
    Holding Institution: University of Toronto - Gerstein Science Information Centre
    Subjects: achteruitgang, bossen  afsterving  bosbescherming  bosbouw  bospathologie  bosplagen  bosschade  Bosteelt  Bosziekten en -plagen  Canada  Dieback  forest damage  Forest decline  forest pathology  forest pests  Forest Pests and Diseases  Forestry  Forests and forestry  houtteelt  Periodicals  protection of forests  Research  silviculture
  2. By: Coultas, Harland,
    Publication info: New York, D. Appleton, 1860
    Holding Institution: Multiple institutions
    Subjects: Bosteelt  silviculture  Trees