00629naa#a2200181#i#450# EN\\bibl\118997 20260407215255.2 1819-4036 20210930b2021####ek#y0engy0150####ca RU FIELD CROP ROTATIONS FORMATION FEATURES IN THE WESTERN SIBERIA FOREST STEPPE Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2021 6 с. Journal article local Общие вопросы сельского хозяйства. 631 Yushkevich Leonid Vital'evich Chibis Valeriy Viktorovich sej.kgau.ru