(Commercial standard CS22-30.) [2d revision of Simplified practice recommendation no. 18. Title on cover is: Builders' hardware (nontemplate), elimination of waste through simplified commercial practice. Effective date for new production, June 1, 1930.]
Notes:
(Commercial standard CS22-30.) [2d revision of Simplified practice recommendation no. 18. Title on cover is: Builders' hardware (nontemplate), elimination of waste through simplified commercial practice. Effective date for new production, June 1, 1930.] * For Sale by Superintendent of Documents. Paper. 10c.
Availability:
* For Sale by Superintendent of Documents. Paper. 10c.