| Born | 1861 |
| Died | 1937 |
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| Born | 1861 |
| Died | 1937 |
Subjects
Kinematics of Machinery, Dental Radiography, Kinematics, Machine design, Machinery, Kinematics of, Machinery, kinematics of, Mechanics, Radiography, Teeth, Teeth, radiographyID Numbers
- OLID: OL2534276A
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Alternative names
- John H. Barr
- John H[enry] Barr
| January 23, 2013 | Edited by kiwigirl3850 | merge authors |
| June 7, 2012 | Edited by VacuumBot | Removed period from death date |
| August 18, 2008 | Edited by an anonymous user | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |