Cover image for Railway electric interlocking
Title:
Railway electric interlocking
Author:
Rockwell, Ray Robert, 1885-
Personal Author:
Publication Information:
Scranton, Pa. : International Textbook Co., [1933]

©1933
Physical Description:
iv, 65 pages, 87 pages, 7 unnumbered folded leaves of plates : illustrations ; 20 cm
General Note:
"Railway electric interlocking, parts 1-2."

"558."
Language:
English
Format :
Book