Hansen wrote scholarly works on Goethe's Metamorphosis of Plants and had a fierce dipute over this hypothesis with Houston Stewart Chamberlain.
Gus Hansen | Al Hansen | Stan Hansen | Gunnar Hansen | Adolph Rupp | Adolph Rickenbacker | Ron Hansen | Martin Lundgaard Hansen | Mark Victor Hansen | Kai Hansen | James Hansen | Adolph Kussmaul | Adolph Deutsch | Adolph | Rasmus Thrane Hansen | Peter Allan Hansen | Johann Adolph Hasse | Gustav Adolph Ackermann | Fritz Hansen | Carl Hansen Ostenfeld | Andrew Hansen | Adolph Zukor | Adolph Wold | Adolph Tidemand | Adolph Strümpell | Adolph Lewisohn | Adolph Kolping | Adolph Fischer | Adolph Daniel Edward Elmer | Tommy Hansen |