Oskar Kellner

German agricultural scientist.

Born May 13th, 1851 in TuĊ‚owice, Opole Voivodeship.

Died September 22nd, 1911 at 60 years old in Karlsruhe.

Occupations
chemist, physiologist, university teacher
Wikipedia

It is not length of life, but depth of life. Ralph Waldo Emerson