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1.
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Geneva, Switzerland : World Intellectual Property Organization, 2002.
English | 10.34667/tind.28689 |
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2.
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New York, N.Y. : Stockton Press, 1987.
German | G 252 INT |
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3.
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Paris : Organisation for Economic Co-Operation and Development, 1985.
English | G 252 BEI.B |
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4.
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Reading, Mass. : Addison-Wesley Pub. Co., 1982.
English | G 251 SAL.L |
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5.
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[Geneva, Switzerland] : [World Intellectual Property Organization], [1996]
English | W F3 661(E) 2016 |
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