Columbia subject headings:
Factory and trade waste--Bibliography.
Factory and trade waste.
Recycling (Waste, etc.)
Recycling (Waste, etc.)--Bibliography.
Harvard subject headings:
Factory and trade waste--Bibliography.
Factory and trade waste.
Recycling (Waste, etc.)
Recycling (Waste, etc.)--Bibliography.
Princeton subject headings:
Factory and trade waste--Bibliography.
Factory and trade waste.
Recycling (Waste, etc.)
Recycling (Waste, etc.)--Bibliography.