Complex sentence: That year marked the 20th anniversary of the UN Declaration of Human Rights and Nos 1-5 are titled "Human Rights in the Soviet Union": for the first year of its existence "A Chronicle of Current Events" was the periodical's sub-title.
Split into simpler sentences: That year marked the 20th anniversary of the UN Declaration of Human Rights and Nos 1-5 are titled "Human Rights in the Soviet Union". For the first year of its existence "A Chronicle of Current Events" was the periodical's sub-title.