In ḳamf far a nayer dertsiung di Arbeṭer-ring-shuln : zeyer opshṭam, antṿiḳlung, ṿuks un itsṭiḳer-tsushṭand ; 1919 - 1939 - Niger, Samuel 1883-1955 (Arbeṭer-Ring-Bildungs-Komiṭeṭ, 1940)