| Company | Category | Area | Address | Web | E-mail | Contact person |
| O & K RANCH | Amusement/recreation Services | Iowa | 2475 195TH TRL, WINTERSET, Madison, Iowa, 50273-8172, USA |
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Katheryn Russell |
| O & P1 | Misc Retail Stores | Iowa | 527 PARK LN, WATERLOO, Black Hawk, Iowa, 50702-5236, USA |
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DENNIS CLARK |
| O & W FARMS | Farms | Iowa | 10953 US HIGHWAY 69, VAN WERT, Decatur, Iowa, 50262-5099, USA |
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Jim O'Hair |
| O A Lorch 36 | Nonclassified Establishments | Iowa | 210th St, HARRIS, Osceola, Iowa, 51345, USA |
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Roger Frodermann |
| O A TECHNICAL SVC | Coml Physical Resch | Iowa | 4744 202ND ST, CASCADE, Dubuque, Iowa, 52033-8657, USA |
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| O A TECHNICAL SVC | Environmental & Ecological Ser | Iowa | 4744 202ND ST, CASCADE, Dubuque, Iowa, 52033-8657, USA |
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| O BASUK & SON CO | Scrap Metals-Processing/Recycl | Iowa | 913 D ST, CHARLES CITY, Floyd, Iowa, 50616-2331, USA |
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Howie Basuk |
| O BS PLUMBING & HEATING | Heating,Air Cond Cont | Iowa | 14 6TH ST NW, NORA SPRINGS, Floyd, Iowa, 50458-8844, USA |
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DUANE O'BANION |
| O BS PLUMBING & HEATING | Air Conditioning Contractors & | Iowa | 14 6TH ST NW, NORA SPRINGS, Floyd, Iowa, 50458-8844, USA |
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Duane O'Banion |
| O BS PLUMBING AND HEATING | Plumbing/heating/air Cond Cont | Iowa | PO BOX 24, NORA SPRINGS, Floyd, Iowa, 50458-0024, USA |
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Duane Banion |
