Датотека:1911 Britannica - Aurora Polaris.png
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Originalna datoteka (531 × 685 piksela, veličina datoteke: 423 kB, MIME tip: image/png)
Opis izmene
| Opis |
English: A series of curves which are believed to give a good general idea of the relative frequency of aurora throughout the northern hemisphere. H. Fritz’ curves, shown in the illustration, are termed isochasms. Illustration from 1911 Encyclopædia Britannica, article Aurora Polaris. |
| Datum | |
| Izvor |
Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 928  |
| Autor | Encyclopædia Britannica, 1911 |
Licenciranje
|
This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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| Datum/vreme | Minijatura | Dimenzije | Korisnik | Komentar | |
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| trenutna | 16:38, 7. decembar 2013. | | 531 × 685 (423 kB) | Clarice Reis | User created page with UploadWizard |
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