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щиток из восковых выделений (у кокцид); парножелезистые червецы (Asterolecanidae) |
pit scale : 18 phrases in 8 subjects |
Construction | 1 |
Entomology | 5 |
Foundry | 1 |
Materials science | 1 |
Mechanic engineering | 1 |
Metallurgy | 6 |
Steel production | 1 |
Technology | 2 |