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Paul Niggli

Swiss crystallographer and professor (1888-1953).

Born June 26th, 1888 in Zofingen.

Died January 13th, 1953 at 64 years old in Zürich. [ref]

Occupations
crystallographer, geologist, mineralogist, university teacher
Wikipedia

The great thing about getting older is that you don't lose all the other ages you've been. Madeleine L'Engle