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species or other taxonomic unit that recently was considered as fading, infrequent or vulnerable but a number of which has been retrieved by now and due protection is pro

a document accepted by General Assembly of UN in 1982, defining, that the basic natural processes (turnover of matters, etc.) should be saved at a rather invariable level

Открытое образование (ОО) - 1) система, которая обеспечивает общенациональный доступ к образовательным ресурсам путем широкого использования информационных технологий дис