Operation of railroads : maintenance of signals /

Bibliographic Details
Corporate Author: United States. War Department
Format: Government Document Book
Language:English
Published: Washington, D.C. : The Dept. : U.S. Govt. Print. Off, 1945.
Series:War Department technical manual ; TM 55-277.
Subjects:
Description
Item Description:"TM 55-277"--cover.
"14 June 1945"--inside cover.
Includes index to rules.
Physical Description:ii, 45 pages ; 17 cm.