/ http://www.slideshare.net/images/logo.gif / �ݺ�ߣShare feed for �ݺ�ߣshows by User: BogdanSergey https://cdn.slidesharecdn.com/profile-photo-BogdanSergey-48x48.jpg?cb=1478693661 Специализация: Applied mechanics, geomechanics http://bmci.by/en/index.html