00875naa#a2200313#i#450# EN\\bibl\46925 20240505132051.7 1681-1208 20091225b2009####ek#y0engy0150####ca RU Technology of creation of digital charts of the Earth's main magnetic field Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2009 5 с. Journal article local Zhalkovsky E A Nikiforov V I Merzly A M Beriozko A E Soloviev A A Khokhlov A V Nikiforov O V Snakin V V Mitenko G F Shary P A Khrisanov V R Golovkov V P Bondar T N Zhalkovsky E E rjes.ru