00677naa#a2200169#i#450# EN\\bibl\17144 20251107100359.5 20251106b2025####ek#y0engy0150####ca RU STUDY OF GROUP (INTERFAMILY) VARIABILITY OF PRODUCTIVITY TRAITS IN BIRCH HYBRIDS Conference article/thesis Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2025 6 с. Conference article/thesis local Лесное хозяйство. Лесоводство. 630 Isakov Igor Yur'evich Koltunova L. I. bibl.vgltu.ru