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Daw'r ffeil hon o Comin Wikimedia a gellir ei defnyddio gan brosiectau eraill. Dangosir isod y disgrifiad sydd ar dudalen ddisgrifio'r ffeil yno.

Disgrifiad
English: Ronald Ross, winner of Nobel Prize in Medicine
Deutsch: Der Medizin-Nobelpreisträger Ronald Ross
Ffynhonnell http://resource.nlm.nih.gov/101427700
Awdur Unknown authorUnknown author
Caniatâd
(Ailddefnyddio'r ffeil hon)
Public domain This image is a work of the National Institutes of Health, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.
Please ensure that this image was actually created by the US Federal government. The NIH frequently uses commercial images which are not public domain.

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he invented malaria vaccine

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cyfredol13:15, 7 Rhagfyr 2009Bawdlun y fersiwn am 13:15, 7 Rhagfyr 2009837 × 1,189 (157 KB)TryphonWithout watermark, cropped from http://ihm.nlm.nih.gov/images/B22803.
12:15, 14 Ebrill 2005Bawdlun y fersiwn am 12:15, 14 Ebrill 2005318 × 449 (29 KB)竹麦魚(Searobin)Ronald Ross from en:Wikipediaen:Image:Ronald Ross.jpg10:35, 11 Jun 2003 . . Magnus Manske (29287 bytes) (From http://wwwihm.nlm.nih.gov/){{PD-USGov-NIH}}

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