File:David Hilbert postcard.png
原始文件 （533×861像素，文件大小：225 KB，MIME类型：image/png）
小结
| 描述 | David Hilbert |
| 日脚 | 在1912年之前 |
| 来源 | Reid, Constance (1970年) 《 Hilbert》、Berlin, Heidelberg： Springer Berlin Heidelberg Imprint Springer、第230頁 ISBN： 978-3-662-27132-2. |
| 作者 | 未知 |
| 许可协议 (重用本文件) |
This photograph was taken in 1912 for postcards of faculty members at the University of Göttingen which were sold to students at the time (see "Hilbert", Constance Reid, Springer 1970). It was therefore published before 1923. Since it is not written in a foreign language, it is public domain in the US. It is likely that the original copyright holder was the photographer, and it is reasonable to assume that someone of professional age in 1912 died before 1964. This does not affect the copyright status in the US, but may mean that the image is also in the public domain in countries where the copyright term is life of author plus 50 years. |
授权协议
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 公有领域作品必须在美国以及来源国没有版权问题，才能上传至维基共享资源。如果此作品不是美国作品，这个文件必须要有一个额外的版权标记显示此文件在来源国的版权状态。
注意：此标签不应用于录音作品。 |
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| 日脚 / 辰光 | 微缩图 | 维度 | 用户 | 备注 | |
|---|---|---|---|---|---|
| 当前 | 2017年2月15号 (三) 04:48 |  | 533 × 861（225 KB） | Quibik | increase contrast |
| 2017年2月15号 (三) 04:47 |  | 533 × 861（203 KB） | Quibik | == {{int:filedesc}} == {{information |description={{w|David Hilbert}} |permission=This photograph was taken in 1912 for postcards of faculty members at the University of Göttingen which were sold to students at the time (see "Hilbert", Constance Reid,... |
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