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Subject
Boundaries
8
Environment
7
Biology and Ecology
6
Geoscientific Information
6
Society
5
Administrative and political divisions
3
Farming
3
Protected areas
3
States
3
Wilderness areas
3
Agricultural machinery
2
Agriculture
2
Biotic communities
2
Broilers (Chickens)
2
Calves
2
Cattle
2
Census
2
Chickens
2
Corn
2
Cotton
2