(Commercial standard CS6-29.) [Title on cover is: Wrought-iron pipe nipples, elimination of waste through simplified commercial practice. Recommendation became effective Jan. 1, 1929.]
Notes:
(Commercial standard CS6-29.) [Title on cover is: Wrought-iron pipe nipples, 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.