Columbia subject headings:
Harvard subject headings:
Manufacturing industries--Military aspects--Great Britain--History--20th century.
Tanks (Military science)--Great Britain--History--20th century.
World War, 1939-1945--Economic aspects--Great Britain.
Princeton subject headings:
Manufacturing industries--Military aspects--Great Britain--History--20th century.
Tanks (Military science)--Great Britain--History--20th century.
World War, 1939-1945--Economic aspects--Great Britain.