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1.
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Paris, France : Organisation for Economic Co-operation and Development (OECD), 2001.
English | B 70 MAD.E |
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2.
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[Place of publication not identified] : [publisher not identified], 1978.
French | 15 CH |
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3.
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[Lisboa] : Spautores, 2014.
1a. edition.
Portuguese | N 71 LET.S |
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4.
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[Geneva, Switzerland] : [World Intellectual Property Organization], [1994].
French | E 234M234 OMPI.S |
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