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Пьянов, В.С. Крупнотоварное производство зерна [электронный ресурс]: Монография / В.С. Пьянов. — 1. — Ставрополь: Ставропольский государственный аграрный университет, 2014 — 244 с. — ВО - Магистратура. — <URL:https://znanium.com/catalog/document?id=35355>. — <URL:https://znanium.com/cover/0514/514198.jpg>.
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