Frederik_Kaiser.jpg
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Summary
| Description | Frederik Kaiser (1808 – 1872) |
| Date | Unknown date |
| Source | Frederik Kaiser (1808-1872) and the modernisation of Dutch astronomy |
| Author | Unknown author |
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Permission
( Reusing this file ) |
PD by age (Kaiser passed away in 1872) |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer . This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |