Standard welding symbols.
By: Approved by Technical Council, Apr. 16, 1958.  Submitted to American Standards Association for adoption as a revision to American Standard Z32.2.1-1949.
Publisher: American Welding Society
Published: 1958
Place of publication: New York
Language: eng
Number of pages: 87
Subjects: Welding -- Notation.
Notes: At head of title: A2.0-53.