Columbia subject headings:
Harvard subject headings:
Cannabis--Government policy--Great Britain--History--19th century.
Cannabis--Government policy--Great Britain--History--20th century.
Cannabis--India--History.
Cannabis--Law and legislation--Great Britain--History--19th century.
Cannabis--Law and legislation--Great Britain--History--20th century.
Drug control--Great Britain--Colonies--History--19th century.
Drug control--Great Britain--Colonies--History--20th century.
Drug control.
Pharmaceutical policy--Great Britain--Colonies--History--19th century.
Pharmaceutical policy--Great Britain--Colonies--History--20th century.
Princeton subject headings:
Cannabis--Government policy--Great Britain--History--19th century.
Cannabis--Government policy--Great Britain--History--20th century.
Cannabis--India--History.
Cannabis--Law and legislation--Great Britain--History--19th century.
Cannabis--Law and legislation--Great Britain--History--20th century.
Drugs--Governement policy--Great Britain--Colonies--History--20th century.
Drugs--Government policy--Great Britain--Colonies--History--19th century.