Nature
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| Etymology |
| The formation and physiography of the Caspian Sea |
| The coasts and islands of the Caspian Sea |
| Gulfs, rivers and harbors |
| Climate |
| Caspian Sea challenges |
| Natural resources |
| Maps |
| Etymology |
| The formation and physiography of the Caspian Sea |
| The coasts and islands of the Caspian Sea |
| Gulfs, rivers and harbors |
| Climate |
| Caspian Sea challenges |
| Natural resources |
| Maps |