| Title | Comment | Keywords |
|---|---|---|
| Mapping the Sea Floor | 13:06 - 14:03 (00:57) / 0.9 MB | "echo sounding", topography, "James Sadd" |
| USGS and GLORIA | 14:28 - 15:16 (00:48) / 0.5 MB | "echo sounding", GLORIA, "Herman Karl" |
Coastal & Marine Geology InfoBank
USGS CMG InfoBank Geology School: echo sounding |
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