00717naa#a2200193#i#450# EN\\bibl\114699 20260319033838.4 2587-6740 20260215b2026####ek#y0engy0150####ca RU Farming and seed systems in Sub-Saharan Africa: evidence from Tanzania and Uganda Journal article Moscow Electronic science 2026 6 с. Journal article local Экономика сельского хозяйства. Продовольственный комплекс. 338.43 Lukomets Viacheslav Mihaylovich Lukomets Artem Vyacheslavovich Tsatsenko Natalia Andreevna stolypinvestnik.ru