在青藏高原空白区1∶25万区域地质调查成果报告会暨"十一五"工作重点研讨会开幕式上的讲话(总序)

Speech at the Meeting of Reports on the Results of 1∶250000 Regional Geological Survey in the Blank Areas of the Qinghai-Tibet Plateau and the Opening Ceremony of the Symposium on the Key Work in the Eleventh Five-Year Han Period (2006-2010) (in lieu de the preface)