检索到 1 条 责任者=International Symposium on the Role of Patent Information in the Transfer of Technology, Varna,Bulgaria,1980 的结果
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西文图书1.The Role of Patent Information in the Transfer of Technology ; proceedings of the Symposium T-18/I1
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可借复本：2 International Symposium on the Role of Patent Information in the Transfer of Technology, Varna,Bulga
Pergamon International Information Corp 1981
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