| Corn Farm Whol Livestock Soybean Farm in Marengo, IA (14) | General Crop Farm in Marengo, IA (11) |
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| Building Contractors in Marengo, IA (1) | Buildings - Pre - Cut Prefab & Modlr - Mfrs in Marengo, IA (1) |
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| Cash Grains Farm in Marengo, IA (1) | Cattle Feedlot in Marengo, IA (1) |
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| City Government - Executive Offices in Marengo, IA (1) | City Govt - Regulation Adm - Comms Utilities in Marengo, IA (1) |
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