"1888Z"^^ . "1888-06-26Z"^^ . "1953-01-13Z"^^ . . "Paul Niggli (June 26, 1888 \u2013 January 13, 1953) was a Swiss crystallographer who was a leader in the field of X-ray crystallography.Niggli was born in Zofingen and studied at the Swiss Federal Institute of Technology (ETH) in Zurich and the University of Zurich, where he obtained a doctorate. His 1919 book, Geometrische Kristallographie des Diskontinuums, played a seminal role in the refinement of space group theory."@en . . . . "Niggli, Paul"@en . . "1953Z"^^ . "Swiss crystallographer" . "Paul Niggli"@en . . .