Jan Ketelaar 1908–2001 Source: Wikimedia Commons About Jan Ketelaar Dutch chemist (1908-2001) People from the Same Era Giuseppe Tudisco 1902–1982 politician Catania Nathan Yellin-Mor 1913–1980 politician Hrodna Guus Zeegers 1906–1978 athletics competitor Amsterdam Marjorie Wilkins Campbell 1902–1986 biographer, novelist, writer London Horst Habs 1902–1987 physician, university teacher Magdeburg Ángel Amadeo labruna 1918–1983 association football coach, association football player Buenos Aires