(Pamphlet 21-13.) [Another illustration on front cover. Supersedes Pamphlet 21-13, Aug. 10, 1944.]
Notes:
(Pamphlet 21-13.) [Another illustration on front cover. Supersedes Pamphlet 21-13, Aug. 10, 1944.] * For Sale by Superintendent of Documents. Paper, 45c. • Sent to Depository Libraries. Item 1131
Availability:
* For Sale by Superintendent of Documents. Paper, 45c. • Sent to Depository Libraries. Item 1131