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engineer in uniform wearing gloves collects used motor oil sample using vacuum pump and hose for laboratory analysis. concept of industrial research, lubrication testing, and quality control in automotive maintenance workshop. - reference material stock videos & royalty-free footage
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Engineer in uniform wearing gloves collects used motor oil sample using vacuum pump and hose for laboratory analysis. Concept of industrial research, lubrication testing, and quality control in automotive maintenance workshop.
Examining, Laboratory, Transportation
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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 material 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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