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Subject
Boundaries
8
Environment
4
Society
4
Administrative and political divisions
3
Farming
3
Protected areas
3
States
3
Wilderness areas
3
Agricultural machinery
2
Agriculture
2
Biology and Ecology
2
Broilers (Chickens)
2
Calves
2
Cattle
2
Census
2
Chickens
2
Corn
2
Cotton
2
Cows
2
Cropland
2