Columbia subject headings:
Jews--Austria--Vienna--Biography.
Spira, Leopold.
Harvard subject headings:
Communists--Austria--Biography.
Great Britain--Emigration and immigration.
Jews--Austria--Vienna--Biography.
Spira family.
Spira, Leopold.
Vienna (Austria)--Biography.
Princeton subject headings:
Communists--Austria--Biography.
Great Britain--Emigration and immigration.
Jews--Austria--Vienna--Biography.
Spira family.
Spira, Leopold.
Vienna (Austria)--Biography.