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problems of conservation: soil - part 21 of 25. shows what soil is and how it is formed - then illustrates the damaging effects of water and wind erosion when ground cover is stripped away. demonstrates with on-the-spot examples how the us conservation se - reference materials stock videos & royalty-free footage
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Problems of Conservation: Soil - part 21 of 25. Shows what soil is and how it is formed - then illustrates the damaging effects of water and wind erosion when ground cover is stripped away. Demonstrates with on-the-spot examples how the US Conservation Se
Fertilizer, Archival, Agricultural Field
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