Columbia subject headings:
Cost and standard of living--United States.
Inflation (Finance)--Effect of energy costs on--United States.
Middle class--United States.
Poor--United States.
Harvard subject headings:
Cost and standard of living--United States.
Inflation (Finance)--Effect of energy costs on--United States.
Middle class--United States.
Poor--United States
Princeton subject headings:
Cost and standard of living--United States.
Inflation (Finance)--United States--Effect of energy costs on.
Middle class--United States.
Poor--United States.