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Nice Agreement Concerning the International Classification of Goods and Services for the Purposes of the Registration of Marks : of June 15, 1957, as revised at Stockholm on July 14, 1967, and at Geneva on May 13, 1977, and amended on September 28, 1979.
Geneva : World Intellectual Property Organization, 1992 (2000 printing)
19 p. ; 21 cm.