00686naa#a2200229#i#450# EN\\bibl\112492 20260119162332.1 2311-1402 20200325b2020####ek#y0engy0150####ca RUS RU HEAVY METAL (Cu, Zn, Fe, Mn, Pb, Cd) CONCENTRATION IN SOILS OF TYUMEN Journal article Nizhnevartovsk Nizhnevartovsk State University 2020 7 с. Journal article local Химические факторы. 57.044 RUS Petukhov A S Kremleva T A Khritokhin N A Petukhova G A Kaidunova P I vestnik.nvsu.ru