TY JOUR TI DYNAMICS OF 137Cs CONTENT IN FARM LAND SOILS CONTAMINATED BY THE CHERNOBYL ACCIDENT KW soils KW monitoring KW level KW fertilizers,liming KW production KW pollution KW potash KW radiation JO Bulletin Samara State Agricultural Academy AU Orlov, P.M. AU Akanova, N.I. PY 2018 IS 3 PB Samara State Agrarian University