Additional Authors: | Forbes, John J. V. |
---|---|
Year: | 1939 |
Document Type: | MAIN |
Issuing Agency: | U.S. Govt. Print. Off., |
Series: | Miners' circular ; |
Report Number: | 39 |
Subject: | Mine rescue work--United States |
Link: | https://hdl.handle.net/2027/mdp.39015077562257 |