TY JOUR TI Variations in ratio and correlation of solar magnetic fields in the Fe I 525.02 nm and Na I 589.59 nm lines according to Mount Wilson measurements during 2000–2012 KW magnetic fields KW photosphere magnetic fields KW chromosphere KW solar cycle observations KW instru-mentation KW and data management JO Solnechno-Zemnaya Fizika AU Golubeva, E.. PY 2018 IS 4 PB INFRA-M Academic Publishing LLC.