Examination of the telegraphic apparatus and the processes in telegraphy,
- Notes:
- 166 p. illus., diagrs. 24 cm.
- Data Provider:
- University of Michigan. Libraries
- Collection:
- Washington,: Gov't print. off., and Ann Arbor, Michigan: University of Michigan Library
- Subject Topic:
- Telegraph
- Language:
- eng
- Rights:
- http://quod.lib.umich.edu/t/text/accesspolicy.html
- URL:
- http://name.umdl.umich.edu/AGX3780.0001.001