Columbia subject headings:
Harvard subject headings:
Polish people--Soviet Union.
Schools, Polish--Soviet Union--History--20th century.
World War, 1939-1945--Children--Poland.
World War, 1939-1945--Children--Soviet Union.
Princeton subject headings:
Polish people--Soviet Union.
Schools, Polish--Soviet Union.
Związek Patriotów Polskich w ZSRR.