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1.
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Luxembourg : Office des publications officielles des communautés européennes, 1983.
Danish | A 42C410(113:121:111) CE.G |
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2.
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New York : Special Libraries, 1958.
English | A 42(123:152:151) MOR.C |
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3.
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Geneva [Switzerland] : World Intellectual Property Organization, 1977-
English | E 224K810 WIPO.M |
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4.
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Paris [France] : Oleg Rongus, 1976.
French | A 42 RON.S |
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5.
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Leighton Buzzard : L. Hill, 1974.
Fifth edition.
English | A 42 BUT.W(5) |
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6.
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London, : L. Hill, 1971.
Fourth edition.
English | A 42 BUT.W |
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7.
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New York : Special Libraries, 1958.
English | A 42(151:111) FIS.S |
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