Columbia subject headings:
Beverage containers--Law and legislation--United States.
Recycling (Waste, etc.)--United States.
Waste products as fuel.
Waste products.
Harvard subject headings:
Princeton subject headings:
Beverage containers--Recycling--United States.
Energy conservation--United States.
Recycling (Waste, etc.)--United States.
Refuse and refuse disposal--Law and legislation--United States.