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Agricultural extension work
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74
Agriculture
7
Teaching demonstrations
6
Crops
5
Llamas
4
Potatoes
4
Agricultural exhibitions
3
Alpaca
3
Haciendas
3
Indians of South America -- Andes Region
3
Adobe brick
2
Corn
2
Farmers
2
Fertilizers
2
Sheep
2
Buildings -- Repair and reconstruction
1
Cattle -- Breeding
1
Lakes
1
Landscapes
1
Mother and child
1