Extracts from the Proceedings of the Board of Regents of the Smithsonian Institution, in Relation to the Electro-Magnetic Telegraph.

by Joseph Henry

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  • ISBN10 1275796222
  • ISBN13 9781275796225
  • Publish Date 22 February 2012
  • Publish Status Active
  • Publish Country US
  • Imprint Gale, Sabin Americana
  • Format Paperback (US Trade)
  • Pages 40
  • Language English