Author: Sovetskai︠a︡ sot︠s︡iologicheskai︠a︡ assot︠s︡iat︠s︡ii︠a︡. Severo-Zapadnoe (Leningradskoe) otdelenie. Komissii︠a︡ po izuchenii︠u︡ obshchestvennykh dvizheniĭ