[외국도서] Code of Federal Regulations, Title 34: Parts 400-End (Education) Vocational and Adult Education and Title 35 (Panama Canal): Revised 7/08 (Paperback)
[외국도서] Code of Federal Regulations, Title 40: Parts 400-424 (Protection of Environment) Water Effluent Guidelines and Standards: Revised 7/08 (Paperback)