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title 42
Public Health
chapter I
CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES
part 84
PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
subpart A
Subpart A—General Provisions
Subpart A. Subpart A—General Provisions
§ 84.1 - Purpose.
§ 84.2 - Definitions.
§ 84.3 - Respirators for mine rescue or other emergency use in mines.