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Stefan Polónyi
German civil engineer and author (1930–2021)
Works are not in the worldwide public domain
until January 1, 2122
Biography
Nationality
Germany
Gender
male
Date of birth
July 6, 1930
Occupation
author, civil engineer
Place of birth
Gyula
Country of birth
Hungary
Date of death
April 9, 2021
(90 years)