49 CFR Appendix C to Part 172 - Appendix C to Part 172—Dimensional Specifications for Recommended Placard Holder | Electronic Code of Federal Regulations (e-CFR) | US Law | LII / Legal Information Institute
49 CFR Ch. I (10–1–10 Edition) § 171.16
How to Use 49 CFR Hazardous Materials Shipping Regulations
Online Hazmat Training Courses | IATA/49 CFR/IMDG Training
129 Subpart B—Incident Reporting, Notification, BOE Approvals and Authorization