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Willigan, J. Dennis (Nombre personal)
His Sources and methods of historical demography, 1982: CIP t.p. (J. Dennis Willigan) pub. info. (Dept. of Sociology, Univ. of Utah, Salt Lake City)
His Sources and methods of historical demography, 1982: CIP t.p. (J. Dennis Willigan) pub. info. (Dept. of Sociology, Univ. of Utah, Salt Lake City)