Martindale's Reference Desk Large collection of links to reference resources, including language centers, calculators, maps, and science tables. - Read more http://www.martindalecenter.com/ | |
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Melissa Data ZIP Codes, area codes, cities, states, addresses, information about nonprofit organizations, people who have contributed to political campaigns, and demographics. - Read more http://www.melissadata.com/lookups/index.htm | |
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