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The Old Permic script, sometimes called Abur or Anbur, is an original ancient Permic writing system.
The alphabet was introduced by a Russian missionary Stepan Khrap, also known as Saint Stephen of Perm (Степан Храп, св. Стефан Пермский) in 1372. The name Abur is derived from the names of the first two characters An and Bur. The alphabet derived from Cyrillic and Greek, and Komi tribal signs, the latter being similar in the appearance to runes or siglas poveiras, because they were created by incisions, rather than by usual writing.
source : WP.
abur @ peoples.org.ru