00590naa#a2200169#i#450# EN\\bibl\96587 20260221103355.6 2500-1825 20250617b2025####ek#y0engy0150####ca RU USE OF CROP ROTATIONS IN AGRICULTURE IN KUZBASS IN THE 1970s Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2025 8 с. Journal article local География. Биография. История. 9 Всеобщая история. 94 Orlov Dmitriy Sergeevich sej.kgau.ru