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15by Lensen, George Alexander, 1923-1979Subjects “...World politics 1919-1932....”
Published 1974
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16Published 1986Subjects “...World politics 1945-1989....”
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17Published 1990Subjects “...World politics 1975-1985....”
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18Published 1987Subjects “...World politics 1985-1995....”
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