It looks like you're offline.
Donate
Change Website Language
Open Library logo
additional options menu
Last edited by ImportBot
July 8, 2023
Edit
History of edits to

Direct Current Machines

Revision When Who Comment Diff
3 July 8, 2023
ImportBot
 import existing book    
2 April 14, 2010
Open Library Bot
 Linked existing covers to the edition.    
1 April 30, 2008 Imported from amazon.com record.