Answer:
Marsha L. Rozenblit
Jewish Social Studies, Vol. 20, No. 1 (Fall 2013), pp. 77-120
...this German Jewish group and made German into a Jewish language. In interwar Czechoslovakia, which sus- pected Germans of disloyalty, Jews demonstrated their loyalty by declaring on the cen- sus that they belonged to the “Jewish nationality.” That they spoke German did not mean that they belonged to the German nation...
