Painting of the Mid-Ocean Ridge with rift axis by Heinrich Berann based on the scientific profiles of Marie Tharp and Bruce Heezen (1977).<br>
(High-resolution versions are available at <a rel="nofollow" class="external free" href="https://www.loc.gov/item/2010586277/">https://www.loc.gov/item/2010586277/</a>).
Berann, Heinrich C., Heezen, Bruce C., Tharp, Marie.
1977-01-01
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