The US Army Signal School apprenticeship program for the trade of telegraphic-teletypewriter operator.
Contributors: U.S. Army Signal School.
Series: DA pam 621 ; 100; DA pam -- 621-100.
Publisher: Dept. of Defense, Dept. of the Army, Headquarters
Published: 1977
Place of publication: [Washington]
Language: eng
Subjects: Military telegraph -- United States.; Data transmission systems.
Other titles: Apprenticeship program for the trade of telegraphic-teletypewriter operator.
Notes: December 1977.