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Agricultural machinery
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22
Agricultural engineering
9
Tobacco -- Research
5
Tobacco -- Harvesting
4
Agriculture -- Research
3
Tobacco curing
3
Vibration
3
Freeze-drying
2
Patents
2
Pesticides
2
Tobacco
2
Aerial spraying and dusting in agriculture
1
Agricultural extension work
1
Agricultural facilities
1
Agricultural implements
1
Automation -- Human factors
1
Design -- Human factors
1
Employees -- Workload
1
Farms
1
Fertilizers
1