(Simplified practice recommendation R28-29.) [Supersedes R28. Title on cover is: Sheet steel, elimination of waste through simplified commercial practice. Recommendation became effective Jan. 1, 1929.]
Notes:
(Simplified practice recommendation R28-29.) [Supersedes R28. Title on cover is: Sheet steel, elimination of waste through simplified commercial practice. Recommendation became effective Jan. 1, 1929.] * For Sale by Superintendent of Documents. Paper, 10c.
Availability:
* For Sale by Superintendent of Documents. Paper, 10c.