| http://www.w3.org/ns/prov#value | - After the imposition of martial law, he left Poland to continue his research work in the United States, where he has held several Visiting Scholar and Visiting Fellow positions in institutions such as the USIA Program, U.S. Department of State (1981); The Heritage Foundation (1981); Elizabethtown College, Pa. (1982???1983); and The Hoover Institute, Stanford University (1983).
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