Fishman, Joshua A.: SHTUDYES VEGN YIDN IN POYLN 1919-1939: DI TSVISHNSHPIL FUN SOTSYALE, EKONOMISHE UN POLITSISHE FAKTORN INEM KAMF FUN A MINARITET FAR IR KIEM = STUDIES ON POLISH JEWRY, 1919-1939: THE INTERPLAY OF SOCIAL, ECONOMIC, AND POLITICAL FACTORS