. . . . . . "2015Z"^^ . "Piet Cleij"@en . "Cleij, Piet"@en . "1927Z"^^ . . "Piet Cleij (born 27 May 1927 in Groningen \u2014 7 January 2015 in Bilthoven) was a Dutch linguist. He was the former vice-secretary of the Union Mundial pro Interlingua and the chief lexicographer in the Interlingua community."@en . . "1927-05-27Z"^^ . "2015-01-07Z"^^ . "Piet Cleij"@en . "Dutch linguist" .