Cognomen Sardu (Sardu 
, ساردو) , all over the world, is quite a rare surname. The family name Sardu is characteristic of Andorra, where it is quite a rare surname, Italy, and Romania, where it is a rare surname. Measured by absolute frequency, it is commonest in Italy, France, and Romania. Much less frequently, Sardu is the forename as well as the last name.
| andrea sardu botanist |
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| claudia sardu researcher |
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| celestino sardu researcher ORCID ID = 0000-0001-5099-3790 |
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| rossella sardu Italian association football player, IT (b. 1987) |
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| nina sardu German association football player, DE (b. 1996) |
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