Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
List of devices for respiratory protection approved by U S Bureau Mines
Revision, superseding Information Cir n 6845, indexed in Engineering Index 1935 p 919; present list includes all devices which had official certification of approval by U S Bureau of Mines on Aug 25 1936.
List of devices for respiratory protection approved by U S Bureau Mines
Revision, superseding Information Cir n 6845, indexed in Engineering Index 1935 p 919; present list includes all devices which had official certification of approval by U S Bureau of Mines on Aug 25 1936.
List of devices for respiratory protection approved by U S Bureau Mines
U S Bur Mines -- Information Cir
Yant, W.P. (Autor:in)
1936
6 pages
Aufsatz (Zeitschrift)
Englisch
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List of respiratory protective devices approved by bureau of mines
| Engineering Index Backfile | 1938
List of respiratory protective devices approved by bureau of mines
| Engineering Index Backfile | 1938
List of respiratory protective devices approved by U S bureau of mines
| Engineering Index Backfile | 1937
Bureau of mines approval system for respiratory protective devices
| Engineering Index Backfile | 1951
Significance of bureau of mines approval in selection of respiratory devices
| Engineering Index Backfile | 1947