TY JOUR TI THE RESEARCH OF CHEMICAL AND TOXIC PROPERTIES NEPHELINE SLIME WITH THE PURPOSE OF THEIR USE IN THE AGRICULTURE KW nepheline slime KW mineralogical structure KW microelement structure calcium containing waste KW deoxidant KW sour ground JO Bulletin of KSAU AU Shepelev, I.I. AU Styglits, I.S. AU Yeskova, E.N. AU Zhizhaev, A.M. PY 2016 IS PB Krasnoyarsk State Agrarian University