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Agricultural engineering
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23
Tobacco curing
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23
Tobacco -- Research
5
Agricultural machinery
4
Agriculture -- Research
4
Agricultural laboratories
3
Farm mechanization
3
Tobacco -- Harvesting
3
Plants -- Wounds and injuries
2
Agricultural experiment stations
1
Agricultural implements
1
Agriculture
1
Automation -- Human factors
1
Construction (Assembling)
1
Construction equipment
1
Design -- Human factors
1
Electricity
1
Employees -- Workload
1
Equipment and supplies
1
Farm equipment
1
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