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  1. By: Ghaffariyan, Mohammad Reza
    Type: Article
    In: Silva Balcanica
    Volume: 22
    Issue: 1
    Date: 2021-3-19
    Page Range: 77--87
    Publication Info: Sofia, Bulgaria Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS) [2001]-
    Subjects: eucalypt  Motor-manual felling  productivity  Time study  Tree volume  Work cycle
  2. By: Ghaffariyan, Mohammad Reza
    Type: Article
    In: Silva Balcanica
    Volume: 21
    Issue: 2
    Date: 2020-10-6
    Page Range: 83--98
    Publication Info: Sofia, Bulgaria Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS) [2001]-
    Subjects: Harvesting  Load volume  productivity  Skidder  Skidding distance  Time study
  3. By: Ghaffariyan, Mohammad Reza
    Type: Article
    In: Silva Balcanica
    Volume: 23
    Issue: 2
    Date: 2022-12-20
    Page Range: 55--68
    Publication Info: Sofia, Bulgaria Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS) [2001]-
    Subjects: Forest harvesting  Load volume  productivity  Small forwarder  Time study