TY JOUR TI THE DENSITY OF THE SKELETON OF DIFFERENT FRACTIONS OF SANDY SOIL KW density of the soil skeleton KW sandy soil KW grain size JO Modern Technologies and Scientific and Technological Progress AU Obmanko, N.S. AU Knyazik, V.A. AU Baranova, A.A. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»