TY  - GEN
AU  - van Loon,J H
TI  - [Mechanization and energy expended by man in silviculture]
SN  - 0010-5309
PY  - 1966///0212
KW  - Humans
KW  - Occupations
KW  - Physical Exertion
KW  - Work
N1  - Publication Type: Journal Article
ER  -