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2012 31 (4):
819-823
ISSN: 1004-5589: CN: 22-1111/P |
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| LU Yong-Xu, LIU Cai, FENG Xuan, LIU Xiang |
| College of Geo--exploration Science and Technology，Jilin University，Changchun 130026，China |
| Received null Revised null Online 2012-12-25 |
| Reference |
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| Corresponding author: |
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