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1
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2Published 1989“...Published for the Pension Research Council of the Wharton School by Irwin,...”
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3by Clark, Robert L. (Robert Louis), 1949-“...Published for the Pension Research Council of the Wharton School by Irwin,...”
Published 1991
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4Published 1987“...Published for the Pension Research Council, Wharton School, University of Pennsylvania by Irwin,...”
Conference Proceeding Book -
5
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6by Hall, William D. (William Delaney), 1922-“...Published for Pension Research Council, Wharton School, University of Pennsylvania by R. D. Irwin,...”
Published 1977
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8Published 1979“.... Irwin,...”
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18
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19by McGill, Dan M. (Dan Mays), 1919-2013“... of Pennsylvania, by R. D. Irwin,...”
Published 1955
Book