Claus Killing-Günkel

Claus Killing-Günkel (born Günkel; 9 October 1963), in Esperanto also known as Nikolao Günkel, is a German teacher and interlinguist.

Claus Killing-Günkel

Claus Killing-Günkel (born Günkel; 9 October 1963), in Esperanto also known as Nikolao Günkel, is a German teacher and interlinguist.