The electric clock systems of the London Underground
By: by D.J. Burton
Contributors: Antiquarian Horological Society. Electrical Horology Group.
Publisher: Electrical Horology Group, Antiquarian Horological Society
Published: 1992
Place of publication: London
Language: eng
Notes: Lecture given to a meeting of the Electrical Horology Group of the Antiquarian Horological Society ... on 14th November 1992.