Terrain classification for Canadian forestry / developed and written by P.G. Mellgren of the Forest Engineering Research Institute of Canada (FERIC)

by Mellgren, P. G.
Montreal, Que. : Canadian Pulp and Paper Association, 1980.

A proposed modular machine system for wood harvesting in Eastern Canada / P.G. Mellgren.

by Mellgren, P. G.
Pointe Claire, Que. : Forest Engineering Research Institute of Canada, 1984.

Series: Special report (Forest Engineering Research Institute of Canada) ; SR-24.