Philosophy of mathematics and natural science.
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| 格式: | 图书 | 
| 语言: | English | 
| 出版: | 
        Princeton
          Princeton University Press
    
        1949
     | 
| 版: | Rev. and augm. English ed., based on a translation of Olaf Helmer. | 
| 主题: | 
| 主要作者: | |
|---|---|
| 格式: | 图书 | 
| 语言: | English | 
| 出版: | 
        Princeton
          Princeton University Press
    
        1949
     | 
| 版: | Rev. and augm. English ed., based on a translation of Olaf Helmer. | 
| 主题: |