Folliott Gray's invention "The Duo Electric clock" / by Thomas Schraven ; Krefeld.

By: Material type: TextTextPublisher: Frefeld, Germany : The author, 1997Description: 17 pages : illustrations ; 28 cmContent type:
  • still image
  • text
Media type:
  • unmediated
Carrier type:
  • volume
Subject(s):
Holdings
Item type Current library Call number Status Date due Barcode
Books Books Jost Bürgi Library Reading Room TS544 .S34 1997 (Browse shelf(Opens below)) Available 31560000084257

"Lecture given on the 5th anniversary of the Cologne Clock Society 31/5/1997."

31560000084257 1224

text of talk on Ffolliott Gray's Duo Electric Clock

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