German map showing most of the major divisions of the oceanic basins including major ridges and basins. This map was produced in 1943 by O. Jessen, fifteen years before Ewing, Heezen, and Tharp surmised the continuity of the oceanic ridge system. Published in Petermanns Geographische Mitteilungen.
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| Added On | 18th October 2015 |
| Viewed | 9 viewed |