Columbia subject headings:
Agriculture--Bangladesh--History--20th century.
Agriculture--Economic aspects--Bangladesh--History--20th century.
Agriculture--Economic aspects--India--West Bengal--History--20th century.
Agriculture--India--West Bengal--History--20th century.
Population density--Bangladesh--History--20th century.
Population density--India--West Bengal--History--20th century.
Water resources development--Bangladesh--History--20th century.
Water resources development--India--West Bengal--History--20th century.
Harvard subject headings:
Agriculture--Bangladesh--History--20th century.
Agriculture--Economic aspects--Bangladesh--History--20th century.
Agriculture--Economic aspects--India--West Bengal--History--20th century.
Agriculture--India--West Bengal--History--20th century.
Population density--Bangladesh--History--20th century.
Water resources development--Bangladesh--History--20th century.
Water resources development--India--West Bengal--History--20th century.
West Bengal (India)--Population density--History--20th century.
Princeton subject headings:
Agriculture--Bangladesh--History--20th century.
Agriculture--Economic aspects--Bangladesh--History--20th century.
Agriculture--Economic aspects--India--West Bengal--History--20th century.
Agriculture--India--West Bengal--History--20th century.
Population density--Bangladesh--History--20th century.
Population density--India--West Bengal--History--20th century.
Water resources development--Bangladesh--History--20th century.
Waters resources development--India--West Bengal--History--20th century.