TY JOUR TI Assessment of the territorial concentration of the beet sugar subcomplex in Russia KW food security KW sugar market KW sugar beet production KW production factors KW geographical location KW concentration KW specialization KW development JO INTERNATIONAL AGRICULTURAL JOURNAL AU Svyatova, O.V. AU Nozdracheva, E.N. AU Malahova, S.V. AU Zyukin, D.A. PY 2025 IS 0 PB Electronic science