TY  - BOOK
AU  - Lunzmann, K.
TI  - The resistance coefficient during skidding of log timber its relation to soil mechanics
U1  - 634.98 21st ed.
PY  - 0000///n.d
CY  - Ottawa
PB  - Department of Forestry
KW  - Forestry
KW  - Forestry machinery
KW  - Tractor
N1  - p 26
ER  -