Automatic train control /

Bibliographic Details
Main Author:	Langman, Thomas A.
Format:	Book
Language:	English
Published:	Scranton, Pa. : International Textbook Co., [1930]
Series:	International Textbook Company Bluebooks ; 530.
Subjects:	Railroads > Communication systems. Railroads > Safety appliances.

Description
Physical Description:	90 pages : illustrations ; 19 cm.