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| Filibranchia f (Bivalvia, Lamellibranchia, Pelecypoda); Lamellibranchia f (Bivalvia, Lamellibranchia, Pelecypoda); tweekleppige schelpdieren (Bivalvia, Lamellibranchia, Pelecypoda); tweekleppigen n (Bivalvia, Lamellibranchia, Pelecypoda) | |||
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| weekdieren n | |||
| gliemenes: 4 phrases in 4 subjects |
| Economy | 1 |
| Environment | 1 |
| Life sciences | 1 |
| Natural sciences | 1 |