Surname Koslar (Koslar 
) , around the globe, is a very rare cognomen. The surname Koslar is characteristic of Western Europe, particularly Germany, where it is a very rare surname, Switzerland, and France, where it is an extremely rare surname. Very seldom, Koslar is the forename as well as the last name.
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michael koslar DE (b. 1967) |
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| wilhelm koslar DE (b. 1924) |
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| dieter koslar cyclist (1940-2002), DE (b. 1940) |
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