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1 9 5 1 nian zhu yao dang shi lun wen
1 9 5 1 xi cang he ping jie fang lun wen
1 9 5 2 ma ke wei ci fa biao lun wen
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1 9 5 2 nian tu di gai ge lun wen
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1 9 5 3 n a t u r e lun wen
1 9 5 3 nian d n a lun wen
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