(Simplified practice recommendation no. 56.) [Title on cover is: Elimination of waste, simplified practice, carbon brushes and brush shunts. Recommendation became effective Nov. 1, 1926.]
Notes:
(Simplified practice recommendation no. 56.) [Title on cover is: Elimination of waste, simplified practice, carbon brushes and brush shunts. Recommendation became effective Nov. 1, 1926.] * For Sale by Superintendent of Documents. Paper, 5c.
Availability:
* For Sale by Superintendent of Documents. Paper, 5c.