TY JOUR TI ANALYSIS OF FACTORS INFLUENCING THE PROFITABILITY OF AGRICULTURAL PRODUCTION KW profitability of production KW factors of agricultural production KW triad systems method KW relationships JO Vestnik of Omsk SAU AU SOYUNOV, A.S. AU SABIEV, U.K. PY 2025 IS 57 PB FSBEI HE Omsk SAU