Publication 52 - Hazardous, Restricted, and Perishable Mail > 6 International Mail
6 International Mail
61 General
611 Refusal by Air Carrier
62 Hazardous Materials: International Mail
621 General Requirements
621.1 Mailing Conditions
621.2 Hazard Classes
621.3 Limited Quantity Air and Limited Quantity Ground
621.4 APO/FPO/DPO Mail
621.5 Extra Service Codes and Shipping Service Files
622 Mailable Hazardous Materials
622.1 General
622.2 Biological Substances, Division 6.2
622.3 Radioactive Materials, Class 7
622.4 Magnetized Materials
622.5 Lithium and Lithium-ion Cells and Batteries — General
623 Nonmailable Hazardous Materials
63 Restricted Matter: International Mail
631 APO/FPO/DPO Mail
632 Firearms
632.1 Export to APOs/FPOs/DPOs
632.2 Import
633 Inert Replica and Explosive Devices
634 Knives and Sharp Instruments
635 Drugs
636 Controlled Substances
637 Other Restricted Matter
64 Perishable Matter: International Mail
641 APO/FPO/DPO Mail
642 Animals
643 Eggs
643.1 Fresh Eggs
643.2 Dried Whole Eggs
644 Plants
645 Fresh Foods and Other Perishables