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1.
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Ginebra [Colombia] : Organización Mundial de la Propiedad Intelectual, 1978-
Spanish | E 2314T23 OMPI.COPR (F/E/S) |
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2.
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Geneva [Switzerland] : World Intellectual Property Organization, 1978-
English | E 2314T23 WIPO.COPR (F/E/S) |
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3.
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Köln : C. Heymanns, c1992.
First edition.
German | T 23 BEI.W |
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4.
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Halifax, N.S. : Institute for Research on Public Policy, 1991.
English | T 23 KHE.C |
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