Gallup Organization
Provides market research and consulting services for Fortune 500 clients. It also publishes America's leading barometer of public opinion.
http://www.gallup.com
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Kalorama Information
Providing a searchable database of market research reports, newsletters, competitive intelligence data, and company profiles. Covering variety of topics, markets, and countries.
http://www.marketresearch.com
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Paradigm RedShift
Publishing consultants, business plans, marketing research and technical planning.