The evolution of timeswitches
Subtitle: lecture given to a meeting of the Electrical Horology Group ... at the Science Museum ... 23rd November, 1974.
Contributors: Antiquarian Horological Society. Electrical Horology Group.
Publisher: Antiquarian Horological Society Electrical Horology Group
Published: 1974
Place of publication: (Ticehurst, Sussex
Language: eng
Notes: Cover title.

Title on spine: Electrical Horology Group pamphlets.