Official Catchword Index To The 2d Ed Of The International patent Classification.

出版社:London, : World Intellectual Property Organization, 1974.
出版年:1974
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细分类型:西文文献
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Official Catchword Index To The 2d Ed Of The International patent Classification.

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OFFICIAL CATCHWORD INDEX TO THE SECOND EDITION (1974) OF THE INTERNATIONAL PATENT CLASSIFICATION

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