"A combined-volume reissue of the IRSE 'green booklets' no. 7. Signal control circuits - no. 9. Track circuits - no. 11. Railway signalling power supplies."
Title from cover.
Originally published: Colchester : Peter Kay, 2001.
British Railway signalling practice. Electrical. Published by IRSE in 2007. Publication and catalogue information, links to buy online and reader comments.