"Fiedler, Jeannine and Peter Feierabend; Bauhaus, Cologne: Konemann, 2000."@en . . "Berthold, Johannes"@en . . "2015-06-18"^^ . "2015-07-16"^^ . "2015-08-25"^^ . "2015-06-18"^^ . "2015-07-16"^^ . "2015-08-25"^^ . "active ca. 1925"@en . . .