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Rekordy dla European Convention on the international classification of patents for invention



R116.17

Council of Europe (Strasburg)

European Convention on the international classification of patents for invention : [Paris, 19th December 1954] / [Council of Europe]. - [Strasburg : Council of Europe], 1966. - [19] s. ; 27 cm. - (European Treaty Series ; No. 17)

[000003744]