[Supersedes Pamphlet 20-21, Mar. 5, 1948, and SR 615-215-2, Mar. 9, 1949.]
Notes:
[Supersedes Pamphlet 20-21, Mar. 5, 1948, and SR 615-215-2, Mar. 9, 1949.] * For Sale by Superintendent of Documents. Paper, $1.00. • Sent to Depository Libraries. Item 1064
Availability:
* For Sale by Superintendent of Documents. Paper, $1.00. • Sent to Depository Libraries. Item 1064