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| RSVP Research Services Research services, specializing in telephone research. | |
| Cline and Davies Research Alliance Also provides expert witness and professional speaking services. Pennsylvania-based company conducts marketing and advertising research, and business and forensic economic analysis. | ||
| Business Insights Group Pennsylvania based market research company providing qualitative research and focus groups. | ||
| Tweed-Weber Inc. A consulting firm specializing in customized market research and strategic planning. | ||
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