Columbia subject headings:
Harvard subject headings:
Berlin, Battle of, Berlin, Germany, 1945
Poland. Wojsko Polskie. Armia, Pierwsza
World War, 1939-1945--Campaigns--Eastern Front
World War, 1939-1945--Regimental histories--Poland
Princeton subject headings:
Poland. Wojsko Polskie. Armia, Pierwsza
World War, 1939-1945--Campaigns--Germany.
World War, 1939-1945--Regimental histories--Poland--Armia, 1.