Cognomen Piiper (Piiper 
) , all around the world, is a very rare surname. The surname Piiper is habitual in Estonia, where it is quite a rare surname, Australia, where it is a very rare surname, and Germany, where it is an extremely rare surname. Very seldom, Piiper is the forename as well as the last name.
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johannes piiper Estonian zoologist and nature writer, EE (b. 1882) |
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| elviine piiper Estonian zoologist (1887-1978), EE (b. 1887) |
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| johannes piiper Estonian physiologist who worked in Germany, EE (b. 1924) |
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| kristi piiper children's writer from Estonia, EE (b. 1983) |
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