00722naa#a2200157#i#450# EN\FNC «VIK IM. V. R. VIL'YAMSA»\bibl\4295 20260319200726.4 20200708b2020####ek#y0engy0150####ca RU Formation of productive phytocenoses of a long period of use with the improvement of degenerate grass stands Conference article/thesis Lobnya Federal Williams Research Center of Forage Production and Agroecology 2020 3 с. Conference article/thesis local Сельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство. 63 Shipilov Ivan Alekseevich adaptagro.editorum.ru