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bruine dwergmeerval (Ameiurus nebulosus, Ictalurus nebulosus) | |||
zwarte dwergmeerval (Ictalurus melas, Ameiurus melas); bruine dwergmeerval (Ictalurus nebulosus, Ameiurus nebulosus) | |||
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dwergmeervallen (Ictaluridae) | |||
meerval m (Ictaluridae) |
Zwergwels : 3 phrases in 2 subjects |
Fish farming pisciculture | 2 |
Natural resourses and wildlife conservation | 1 |