Noise impact on working woodchip board at mid and high frequencies, the most harmful to humans. In the workplace, levels from 1 to 14
dB were
Последнее сражение Ермака: исторические источники и исследованияThe article considers the controversial problems of
Ermak's ruin.
Изида – предвестница перемен на памятнике Ермаку в НовочеркасскеRevealing the image of
Ermak and feeling the approach of the revolution, the author of the monument