Columbia subject headings:
Harvard subject headings:
Canada--Economic policy--1991-
Canada--Politics and government--21st century.
Canada--Social policy.
Environmental policy--Canada
Harper, Stephen, 1959-
National security--Canada
Princeton subject headings:
Canada--Economic policy.
Canada--Politics and government.
Canada--Social policy.
Environmental policy--Canada--History--21st century.
National security--Canada--History--21st century.