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Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
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1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture conservation, hilly field Mammoth Cave National Park; National Park Service
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Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture work, erosion, 1945 Mammoth Cave National Park; National Park Service
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1945-06
Soil and moisture work, erosion, 1945 Mammoth Cave National Park; National Park Service
View on map 
1945-06
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Soil and moisture after treatment, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-07
Erosion control, gully erosion in Houchins Valley, 1939 Mammoth Cave National Park; National Park Service
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1939-11-28
Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
View on map 
Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, trees in background Mammoth Cave National Park; National Park Service
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Soil and moisture conservation, Brooks Knob, facing west, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
Soil and moisture work, two men with sticks, 1945 Mammoth Cave National Park; National Park Service
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1945-06
Landscape shot of soil erosion facing east, Brooks Knob, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
Landscape shot showing the effects of soil erosion, Joppa Church, 1948 Mammoth Cave National Park; National Park Service
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Circa 1948
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About 810 Items

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