Report of the third session of the Study Group on Mechanization of Forest Work of the Joint Committee on Forest Working Techniques and Training of Forest Workers, Geneva, Switzerland, 9-13 Jun 1969

aprovechamiento de la madera bois camion camiones carreteras ciencias forestales cosecha engineering equipo forestal forest land foresterie forestry forestry equipment harvesting highlands logging madera mechanization public works roads route terrain forestier tierras forestales transport transporte travaux publics trucks wood