Russia Under Two Tsars, 1682-1689: The Regency of Sophia AlekseevnaEbookRussia Under Two Tsars, 1682-1689: The Regency of Sophia AlekseevnabyC. Bickford O'BrienRating: 0 out of 5 stars0 ratingsSave Russia Under Two Tsars, 1682-1689: The Regency of Sophia Alekseevna for later