"All enemies We Will Wipe Off From the Face of the Earth, They Will Not Mud Our Soviet Union…". Great Terror in Kyiv Region in 1937 – 1938: machinery, range, peculiarity / Prolusion and publication by O. Bazhan O. Bazhan - O. H. Bazhan (From the archives of the VUChK, GPU, NKVD, KGB, 2017)