00651naa#a2200193#i#450# EN\\bibl\9699 20241228150200.6 2308-8877 20151122b2015####ek#y0engy0150####ca RUS RU The regeneration of spruce under the canopy of stand in Leningrad region Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 7 с. Journal article local Grigoreva Olga I. Beliaeva Nataliia Valer'evna Aroyan K. zh-szf.ru