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Theoretical bases of type determination. 类型确定的理论基础。
Sciences Pub Date : 1949-04-01
P DELAPORTE
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引用次数: 0
The evolution of the press for the dissemination of science since the beginning of the XIX Century. 十九世纪初以来为传播科学而出版的演变。
Sciences Pub Date : 1949-04-01
A RANC
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引用次数: 0
The electron microscope. 电子显微镜。
Sciences Pub Date : 1947-03-01
SELME
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引用次数: 0
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