Propane substitution for logging truck engines /

by Clark, Marvin L.
Published 1987

Cost and productivity of a dual load quadaxle trailer /

by Clark, Marvin L.
Published 1986

Highway hauling of tree-length logs in the B.C. Cariboo /

by Clark, Marvin L.
Published 1986

Two replacement models for B.C. coastal logging equipment /

by Sinclair, A. W. J.
Published 1986