Procedure for testing hose masks for permissibility.

Bibliographic Details
Format: Government Document eBook
Language:English
Published: [Washington?] : U.S. Government Printing Office, 1927.
Series:Mines Bur. Schedule No. 19
Subjects:
Online Access:Connect to the full text of this electronic document
Description
Item Description:[On equipment for use in mines]
Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from ProQuest, LLC.
Electronic resource.
Physical Description:1 online resource (ii, 8 pages)
Format:System requirements: PDF reader software.