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охрана птиц | |||
птицезащита (на воздушных линиях электропередач: Suggested Practices for Avian Protection On Power Lines nrc.gov 'More) |
bird protection : 9 phrases in 5 subjects |
Ecology | 5 |
General | 1 |
Natural resourses and wildlife conservation | 1 |
Oil / petroleum | 1 |
Technology | 1 |