1.
図書 |
edited by Paul Urban ; sponsored by Bundesministerium für Wissenschaft und Forschung ... [et al.]
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2.
図書 |
edited by W. Thirring, and P. Urban
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3.
図書 |
Edited by Paul Urban
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4.
図書 |
Edited by Paul Urban
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5.
図書 |
Paul Oskar Urban
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