Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
List of respiratory protective devices approved by bureau of mines
List supplements Information Circular n 6952, indexed in Engineering Index 1937 p 988; present list includes all devices which has official certification of approval by U S Bur Mines on May 20 1938.
List of respiratory protective devices approved by bureau of mines
List supplements Information Circular n 6952, indexed in Engineering Index 1937 p 988; present list includes all devices which has official certification of approval by U S Bur Mines on May 20 1938.
List of respiratory protective devices approved by bureau of mines
U S Bur Mines -- Information Cir
Schrenk, H.H. (Autor:in)
1938
9 pages
Report
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
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
List of devices for respiratory protection approved by U S Bureau Mines
| Engineering Index Backfile | 1936
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