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- Joint FAO/ECE/ILO Committee on Forest Working Techniques and Training of Forest Workers5
- Forest Engineering Research Institute of Canada4
- North Central Forest Experiment Station (Saint Paul, Minn.)4
- Association pour la rationalisation et la mécanisation de l'exploitation forestière (France)3
- Food and Agriculture Organization of the United Nations3
- Sturos, Joseph B.3
- United States. Forest Service3
- Windell, Keith3
- Arola, Rodger A.2
- Biller, Cleveland J.2
- Bradshaw, Sunni2
- Huggard, E. R. (Eric Richard)2
- Owen, T. H. (Thomas Herbert)2
- Technology & Development Program (U.S.)2
- United Nations. Economic Commission for Europe2
- Anderson, Walter C.1
- Arkhangelʹsk (R.S.F.S.R.). Severnyĭ nauchnoissledovatel'skiĭ institut ėlektrifikat︠s︠ii lesnoĭ promyshlennosti1
- Berlyn, R. W.1
- Boyd, J. H.1
- British Columbia. Forest Practices Branch1