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: Changes in Farm Business
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: St. Louis, MO
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: Root Worms
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Clip Search: Army Worms, 1810-1820, Changes in Farm Business, Changes in Farming Methods, St. Louis, MO, HYBRID SEED, Root Worms

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ISM Interviews A-L, Segment 4

SEGMENT: CHANGES IN ENVIRONMENT & PESTS: Video duration 09:34