Progress in metal-mine ventilation in 1930

Author: Harrington, D.
Year: 1931
Document Type: USBI
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
Series: Information circular / Bureau of Mines ;
Report Number: 6469
Subject: Mine ventilation--Congresses
Link: https://hdl.handle.net/2027/mdp.39015077576810

< New search