Very good all round condition.
The Institution of Railway Signal Engineers, Circuits for Colour Lighting Signal
1953 - 1954 Institution of Railway Signal Engineers Journal Proceedings Book
1935 - 1936 Institution of Railway Signal Engineers Journal Proceedings Book
1932 - 1934 Institution of Railway Signal Engineers Journal Proceedings Book
c1950s Institution of Railway Signal Engineers Proceedings x16 Signalling
1950 - 1952 Institution of Railway Signal Engineers Journal Proceedings Book
