Poulsen, Lauge N. Skovgaard, author
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Buku Teks
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University of Chicago Press, 2001
Buku Teks
edited by Stephan Haggard, Chung H. Lee and Sylvia Maxfield
Cornell University Press, 1993
Buku Teks
edited by William R. Cline and Sidney Weintraub
Washington, D.C. , Brooklins Institution
Buku Teks
3475, 1979
Buku Teks