- Juventa Fons
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/yooh ven"tah fons"/an area in the southern hemisphere of Mars, appearing as a dark region when viewed through a telescope.
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Universalium. 2010.
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Universalium. 2010.
Juventa Fons — /yooh ven tah fons / an area in the southern hemisphere of Mars, appearing as a dark region when viewed through a telescope … Useful english dictionary