Columbia subject headings:
Apartment houses--Sanitation--United States.
Recycling (Waste, etc.)--United States.
Refuse and refuse disposal--United States.
Waste minimization--United States.
Harvard subject headings:
Apartment houses--Sanitation--United States.
Recycling (Waste, etc.)--United States.
Refuse and refuse disposal--United States
Waste minimization--United States.
Princeton subject headings: