00578naa#a2200169#i#450# EN\\bibl\1741 20251229182820.1 2308-8877 20140318b2014####ek#y0engy0150####ca RUS RU Approbation of mathematical model of introduction in a tree trunk of an age drill Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Klyuev G. zh-szf.ru