First progress report of the joint investigation of continuous welded rail
1939
29 S.
Ill., graph. Darst.
Book
English
First progress report -- Joint investigation of continuous welded rail
Engineering Index Backfile | 1939
First progress report -- Joint investigation of continuous welded rail
Engineering Index Backfile | 1939
|Second progress report -- Joint investigation of continuous welded rail
Engineering Index Backfile | 1940
|Second progress report -- Joint investigation of continuous welded rail
Engineering Index Backfile | 1940
|New arc-welded continuous rail joint
Engineering Index Backfile | 1932
|