 |
Silurian time
| period
| Silurian time | |
| abbr. | S |
| period | |
| abbr. | periodical |
| abbr. polym. | pd |
| mil. abbr. | per |
| USA | The time it takes for a satellite to complete one orbit around the earth |
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| S (MichaelBurov) | |||
| Silur (MichaelBurov) | |||