[Effective June 1, 1972.] and ([Office of Engineering Standards Service.])
Notes:
([Office of Engineering Standards Service.]) * For Sale by Superintendent of Documents. Paper, 15c. (S/N 0303-01047). • Sent to Depository Libraries. Item 243
Availability:
* For Sale by Superintendent of Documents. Paper, 15c. (S/N 0303-01047). • Sent to Depository Libraries. Item 243