Echo-sounding through ice.
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| Main Authors: | , , , |
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| Format: | Texto biblioteca |
| Language: | |
| Published: |
1964
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| Subjects: | ICE, ECHOSOUNDING, FISH DETECTION, FISHING GEAR, GLACE, ECHOSONDAGE, DETECTION DU POISSON, ENGIN DE PECHE, HIELO, ECOSONDEO, DETECCION DE PECES, EQUIPO DE PESCA, |
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