A progress report on the use of a continuous-transmission, frequency-modulated sonar in fishery research.
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| Format: | Texto biblioteca |
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1969
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| Subjects: | FISHERIES, RESEARCH, FISH DETECTION, FISHING GEAR, FISHERY RESOURCES, PECHES, RECHERCHE, DETECTION DU POISSON, ENGIN DE PECHE, PESCA, INVESTIGACION, DETECCION DE PECES, EQUIPO DE PESCA, RESSOURCE HALIEUTIQUE, RECURSOS PESQUEROS, |
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