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Code of Federal Regulations - Title 40: Parts 81-85 - Protection of Environment..
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Code of Federal Regulations - Title 21 Part 300 - Part 499 - Food and Drugs (FDA-Drugs for Human Use..
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Code of Federal Regulations - Title 40 CFR Parts 300-399; Volume 28, CERCLA, EPCRA..
Code of Federal Regulations - Title 37 - Patents, Trademarks, & Copyrights..