Date of Birth: 
About Hannelore Valencak
- Hannelore Valencak (23 January 1929 – 9 April 2004) was an Austrian physicist, novelist, poet and children's writer.
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See Also
- Famous People's Birthdays on 23 January, Austria
- Famous People's Birthdays in January, Austria
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- Famous physicist's Birthdays in January, Austria
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- Famous science fiction writer's Birthdays in January, Austria