The US Army Signal School apprenticeship program for the trade of telegraphic-teletypewriter operator
Series: Department of the Army pamphlet -- 621-100; DA pam -- 621-100
Publisher: Headquarters, Dept. of the Army
Published: 1981
Place of publication: Washington, DC
Language: eng
Subjects: U.S. Army Signal School -- Curricula; Military telegraph -- United States
Notes: "This pamphlet supersedes DA Pam 621-100, 1 May 1979."

"15 July 1981."