SP-424 The Voyage of Mariner
10
Fig. A-28. This shaded relief map of
the Beethoven quadrangle of Mercury is one of a series of maps of the
planet prepared by the United States Geological Survey for NASA. This
series of topographic map sheets covers that part of the surface of
Mercury that was illuminated during the Mariner 10 encounters. The
maps are based on the images returned by the Mariner 10 television
experiment.
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