Last name Kwas (Kwas 
) , globally, is quite a rare cognomen. The family name Kwas is habitual in Poland, where it is quite a rare surname, Israel, where it is a rare surname, and Ghana. Measured by absolute frequency, it is commonest in Poland, the United States, and Ghana. Also, Kwas is the forename as well as the last name.
| franciszek kwas PL (b. 1871) |
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| ludwika kwas Swedish painter, SE (b. 1944) |
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| włodzimierz kwas PL (b. 1956) |
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| marek kwas Ph.D. Columbia University 2005 |
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| grzegorz kwas actor |
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