TY JOUR TI RESEARCH OF SOME AQUEOUS TWO-PHASE SYSTEMS BASED ON POLYETHYLENE GLYCOL-6000 AND CERTAIN ORGANIC ACID SALTS KW aqueous two-phase systems KW partial molar volume KW binodal JO Russian Journal of Biological Physics and Chemisrty AU Masimov, E.A. AU Bagirov, T.O. AU Ojagverdiyeva, S.Y. AU Iskenderova, K.A. AU Shahverdiyev, Y.K. PY 2016 IS 1 PB Federal State Educational Institution of Higher Education Sevastopol State University