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| apple mussel scale (Lepidosaphes ulmi, Mytilaspis pomorum, Mytiolococcus ulmi); mussel scale (Lepidosaphes ulmi, Mytilaspis pomorum, Mytiolococcus ulmi); oystershell scale (Lepidosaphes ulmi, Mytilaspis pomorum, Mytiolococcus ulmi) | |||
| kermes virgule: 3 phrases in 1 subject |
| Natural sciences | 3 |