The commercial value of studies on fish behaviour with particular reference to lake Victoria.
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Format: | Texto biblioteca |
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1960
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Subjects: | BEHAVIOUR, FISHERIES, RESEARCH, ECONOMIC SITUATION, FISHERY MANAGEMENT, COMPORTEMENT, PECHES, RECHERCHE, SITUATION ECONOMIQUE, GESTION DES PECHES, COMPORTAMIENTO, PESCA, INVESTIGACION, SITUACION ECONOMICA, ADMINISTRACION PESQUERA, |
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