(Training pamphlet 7; War Dept. doc. 1112.) [A pamphlet with the same title was previously printed as Radio pamphlet 7 and later designated by the Signal Office as Training pamphlet 7. The text of these 2 publications differs materially.]
Notes:
(Training pamphlet 7; War Dept. doc. 1112.) [A pamphlet with the same title was previously printed as Radio pamphlet 7 and later designated by the Signal Office as Training pamphlet 7. The text of these 2 publications differs materially.] * For Sale by Superintendent of Documents. Paper, 10c.
Availability:
* For Sale by Superintendent of Documents. Paper, 10c.