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| Ruth Nelson Research Services providing a complete array of market research services to clients in colorado arizona, utah and oklahoma. | |
| NKH & W Regional marketing communications agency providing services to clients in Arkansas, Missouri, Minnesota and Oklahoma. | ||
| AC Nielsen Provides market research services to customers in every US state. | ||
| Carlene Research Provider of market research services with 61 offices nationwide. | ||
| Opinion Research Provider of corporate branding, customer loyalty, market analytics and organizational diagnostics services. | ||
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