TY JOUR TI Determination of the lifting levels elevationsat log bundling areas of the Northern Dvina River KW log bundling area KW lifting level KW exceedance probability JO Actual directions of scientific researches of the XXI century: theory and practice AU Surov, G.. AU Glavatskikh, N.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov