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Agricultural extension work
76
Agriculture
22
Field crops
12
Teaching demonstrations
10
Agriculturists
9
Plants
9
Crops
7
Potatoes
5
Agricultural laborers
4
Farmers
4
Farms
4
Llamas
4
Agricultural exhibitions
3
Agricultural facilities
3
Alpaca
3
Cattle -- Breeding
3
Haciendas
3
Indians of South America -- Andes Region
3
Oil palm
3
Sheep
3