| Corn Farm Whol Livestock Soybean Farm in Winthrop, IA (12) | General Crop Farm in Winthrop, IA (11) |
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| Legislative Body in Winthrop, IA (1) | Libraries - Public in Winthrop, IA (1) |
| Livestock Producers in Winthrop, IA (1) | Lumber - Retail in Winthrop, IA (1) |
| Mfg Canvas Related Products Auto Body Repair Painting in Winthrop, IA (1) | Mfg Farm Machinery Equipment in Winthrop, IA (1) |
| Mfg Farm Machinery Equipment in Winthrop, IA (1) | Mfg Plastic Products in Winthrop, IA (1) |
| Newspapers (Publishers) in Winthrop, IA (1) | Painting Contractors in Winthrop, IA (1) |
| Physicians & Surgeons in Winthrop, IA (1) | Real Property Lessor Vegetable Melon Farm in Winthrop, IA (1) |
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| Sawmills & Planing Mills - General in Winthrop, IA (1) | Tractor - Repairing & Service in Winthrop, IA (1) |
| Trophies Awards & Medals in Winthrop, IA (1) | Trucking, Except Local in Winthrop, IA (1) |
| Us Postal Service in Winthrop, IA (1) | Veterinarians in Winthrop, IA (1) |
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