00483naa#a2200145#i#450# EN\\bibl\133066 20260818191844.2 2587-6740 20260815b2026####ek#y0engy0150####ca RU Circular transformation of the vegetable sector in the Kostanay region as a basis for effective development of the agricultural market Journal article Moscow Electronic science 2026 5 с. Journal article local mshj.ru