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Employees -- Workload
10
Vibration
6
Agricultural machinery
5
Temperature
4
Agricultural engineering
3
Force and energy
3
Heart rate monitoring
3
Tobacco -- Harvesting
3
Air
2
Harvesting machinery
2
Machinery
2
Oxygen consumption (Physiology)
2
Tobacco
2
Tractors
2
Acceleration (Mechanics)
1
Agricultural laborers
1
Bulbs (Plants)
1
Chain saws
1
Computers
1
Cotton
1