TY JOUR TI ANALYSIS OF AGRICULTURAL LAND USE INVOLVING REGIONAL GEOINFORMATION SYSTEMS (ON THE EXAMPLE OF TVER AND NOVGOROD REGIONS) KW agricultural land KW geoinformation systems KW involvement in circulation KW region KW unused land KW agricultural land contours JO MOSCOW ECONOMIC JOURNAL AU Rasskazova, A.A. AU Ruleva, N.P. PY 2025 IS 10 PB Electronic science