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Agricultural engineering
14
Agricultural engineers
1
Agricultural experiment stations
1
Agricultural facilities
1
Agricultural implements
1
Agricultural instruments
1
Agricultural machinery
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26
Agricultural mechanics
8
Agriculture -- Research
1
Angles (Geometry)
1
Automation -- Human factors
1
Defoliation
2
Design -- Human factors
1
Force and energy
1
Harvesting machinery
1
Human engineering
1
Lifting and carrying
1
Mathematics
1
Pesticides
1
Pests -- Control
1