Princeton University Library Catalog
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Subject: Topic
- Beverage containers41
- Recycling41
- Law and legislation27
- United States14
- New Jersey11
- Refuse and refuse disposal9
- Recycling (Waste, etc.)8
- Economic aspects5
- Energy conservation4
- Environmental aspects3
- Scandinavia3
- Hazardous substances2
- Natural gas pipelines2
- New York (State)2
- Pipelines2
- Safety regulations2
- Transportation2
- Administrative acts1
- Administrative procedure1
- Austria1