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1.
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New York : United Nations, 1995.
English | D 331 UN.T |
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2.
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Paris : Masson, [1992]
5e.
English | D 331 GIN.D(5) |
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3.
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Geneva [Switzerland] : Geneve : Iso/Cei, 1992.
2e.
English | D 331 ISO/CEI.I |
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4.
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Madrid : Díaz de Santos, 1985.
Spanish | D 331 MEN.D |
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5.
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Paris : Masson, 1990.
4e.
English | D 331 GIN.D(4) |
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6.
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Genève : ISO, 1981.
French | D 331 ISO.D (E/F) 1981 2 |
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7.
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[Place of publication not identified] : [publisher not identified], 1988.
Second edition.
Hungarian | D 331 VOL.C |
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8.
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Paris : Masson, 1987.
3e.
English | D 331 GIN.D(3) |
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9.
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Paris, France : United Nations Educational, Scientific and Cultural Organization, c1986.
English | D 331 UNESCO.G |
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10.
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New York : United Nations, 1984-
English | D 331 ONU.T 1 |
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