Geology of Mars
Mars geology, discussing polar caps phenomena, diurnal variations, orbital eccentricity, seasonal meteorology, volcanism, erosion, etc
Tombaugh, C. W.↗
Engineering topics
Publications and source records attributed to Tombaugh, C. W..
Mars geology, discussing polar caps phenomena, diurnal variations, orbital eccentricity, seasonal meteorology, volcanism, erosion, etc
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Topographic map of Mars, Mariner IV space probe region
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Photographic and visual observations made at new mexico state university observatory