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1980 年10月7—8日在美国华盛顿市召开,讨论了世界松香、松节油工业的现状和远景,其中有专题谈到“中国之现状”。
Held in Washington, USA, on October 7-8, 1980, he discussed the current status and prospects of the world’s rosin and turpentine oil industry. Some of the topics discussed “China’s current situation”.