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[Subject: General Geography & History]
- Place of exceptional depth.
Translated in 62 languages
[Subject: Generalities]
Translated by: LUCIA VELLANDI
Translated in 16 languages
- The infernal region
Translated by: NISHU VARMA
Translated in 11 languages
Translated by: ROBERT GRIGOR BAXTER
Translated in 8 languages
Translated by: GUEST USER
Translated in 3 languages
Translated by: FARHAD PEZESHKI
Translated in 2 languages
[Subject: Geology, Meteorology, Hydrology]
- deep narrow opening in rock or in earth
Translated in 5 languages