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1.
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München : C.H. Beck, 1991.
German | P 231 DRE.K |
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2.
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[Place of publication not identified] : [publisher not identified], 1974.
German | P 231 STA.V |
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3.
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Bern : Stämpfli, 1986.
German | P 231 KAEL.U |
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4.
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London : Graham & Trotman, 1987.
English | P 23 PIC.C |
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5.
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Baden-Baden : Nomos, 1986.
German | N 711 SCH.U |
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6.
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Köln : C. Heymann, c1983.
German | N 711 PLA.U |
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7.
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Deventer, Netherlands : Kluwer Law International, 1983.
English | N 634 ALAI.C |
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