| http://www.w3.org/ns/prov#value | - Washington DC 20036 USA Phone: 202-331-1010Fax: 202-331-0640Established in 2001, the North American branch of the UK-based International Policy Network works closely with groups such as the Heritage Foundation, Cato Institute, and Competitive Enterprise Institute.IPN maintains a network of free-market think tanks around the world and supports the development of new organizations.
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