a walled plain in the third quadrant of the face of the moon: about 50 miles (80 km) in diameter.
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How to use Fra Mauro in a sentence
This shows an Africa somewhat similar in contour to Fra Mauro's of 1457-9, but almost without names.The Chronicle of the Discovery and Conquest of Guinea | Gomes Eannes de Azurara
Lastly, a more special notice must be taken of the great map of Fra Mauro, 1457-9.The Chronicle of the Discovery and Conquest of Guinea | Gomes Eannes de Azurara