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由中国地质学会主办、中国地质学会青年工作委员会与石油大学（北京）共同承办的第四届全国青年地质工作者学术讨论会———２１世纪的地质科学于１９９９年１０月２８日至３１日在北京昌平石油大学召开，来自１３个部门５５个单位１２１名青年代表参加了会议。与往届大会相比
The 4th National Young Geologist Workshop Hosted by China Geological Society and Held in China by the Youth Working Committee of the Geological Society of China and the Petroleum University (Beijing) - Geological Science in the 21st Century On October 28-31, 1999 At the Changping Petroleum University in Beijing, 121 young delegates from 55 units in 13 departments attended the meeting. Compared with the previous conference