PANIN, A.V.; LEONOV, V.A. NTENSIFICATION FEATURES OF GRAIN PRODUCTION. Среднерусский вестник общественных наук, [S. l.], v. 32, n. 2, p. 237–243, 2014. Disponível em: https://sredneruss-vestnik.owebs.ru/article/view/29104. Acesso em: 8 nov. 2026.